with the following size :
1 x 1 => Total : 1
1 x 2 => Total : 3
1 x 3 => Total : 6
1 x 4 => Total : 10
1 x 5 => Total : 15
1 x 6 => Total : 21
1 x 7 => Total : 28
1 x 8 => Total : 36
1 x 9 => Total : 45
1 x 10 => Total : 55
1 x 11 => Total : 66
1 x 12 => Total : 78
1 x 13 => Total : 91
1 x 14 => Total : 105
1 x 15 => Total : 120
1 x 16 => Total : 136
1 x 17 => Total : 153
1 x 18 => Total : 171
1 x 19 => Total : 190
1 x 20 => Total : 210
2 x 1 => Total : 3
2 x 2 => Total : 9
2 x 3 => Total : 18
2 x 4 => Total : 30
2 x 5 => Total : 45
2 x 6 => Total : 63
2 x 7 => Total : 84
2 x 8 => Total : 108
2 x 9 => Total : 135
2 x 10 => Total : 165
2 x 11 => Total : 198
2 x 12 => Total : 234
2 x 13 => Total : 273
2 x 14 => Total : 315
2 x 15 => Total : 360
2 x 16 => Total : 408
2 x 17 => Total : 459
2 x 18 => Total : 513
2 x 19 => Total : 570
2 x 20 => Total : 630
3 x 1 => Total : 6
3 x 2 => Total : 18
3 x 3 => Total : 36
3 x 4 => Total : 60
3 x 5 => Total : 90
3 x 6 => Total : 126
3 x 7 => Total : 168
3 x 8 => Total : 216
3 x 9 => Total : 270
3 x 10 => Total : 330
3 x 11 => Total : 396
3 x 12 => Total : 468
3 x 13 => Total : 546
3 x 14 => Total : 630
3 x 15 => Total : 720
3 x 16 => Total : 816
3 x 17 => Total : 918
3 x 18 => Total : 1026
3 x 19 => Total : 1140
3 x 20 => Total : 1260
4 x 1 => Total : 10
4 x 2 => Total : 30
4 x 3 => Total : 60
4 x 4 => Total : 100
4 x 5 => Total : 150
4 x 6 => Total : 210
4 x 7 => Total : 280
4 x 8 => Total : 360
4 x 9 => Total : 450
4 x 10 => Total : 550
4 x 11 => Total : 660
4 x 12 => Total : 780
4 x 13 => Total : 910
4 x 14 => Total : 1050
4 x 15 => Total : 1200
4 x 16 => Total : 1360
4 x 17 => Total : 1530
4 x 18 => Total : 1710
4 x 19 => Total : 1900
4 x 20 => Total : 2100
5 x 1 => Total : 15
5 x 2 => Total : 45
5 x 3 => Total : 90
5 x 4 => Total : 150
5 x 5 => Total : 225
5 x 6 => Total : 315
5 x 7 => Total : 420
5 x 8 => Total : 540
5 x 9 => Total : 675
5 x 10 => Total : 825
5 x 11 => Total : 990
5 x 12 => Total : 1170
5 x 13 => Total : 1365
5 x 14 => Total : 1575
5 x 15 => Total : 1800
5 x 16 => Total : 2040
5 x 17 => Total : 2295
5 x 18 => Total : 2565
5 x 19 => Total : 2850
5 x 20 => Total : 3150
6 x 1 => Total : 21
6 x 2 => Total : 63
6 x 3 => Total : 126
6 x 4 => Total : 210
6 x 5 => Total : 315
6 x 6 => Total : 441
6 x 7 => Total : 588
6 x 8 => Total : 756
6 x 9 => Total : 945
6 x 10 => Total : 1155
6 x 11 => Total : 1386
6 x 12 => Total : 1638
6 x 13 => Total : 1911
6 x 14 => Total : 2205
6 x 15 => Total : 2520
6 x 16 => Total : 2856
6 x 17 => Total : 3213
6 x 18 => Total : 3591
6 x 19 => Total : 3990
6 x 20 => Total : 4410
7 x 1 => Total : 28
7 x 2 => Total : 84
7 x 3 => Total : 168
7 x 4 => Total : 280
7 x 5 => Total : 420
7 x 6 => Total : 588
7 x 7 => Total : 784
7 x 8 => Total : 1008
7 x 9 => Total : 1260
7 x 10 => Total : 1540
7 x 11 => Total : 1848
7 x 12 => Total : 2184
7 x 13 => Total : 2548
7 x 14 => Total : 2940
7 x 15 => Total : 3360
7 x 16 => Total : 3808
7 x 17 => Total : 4284
7 x 18 => Total : 4788
7 x 19 => Total : 5320
7 x 20 => Total : 5880
8 x 1 => Total : 36
8 x 2 => Total : 108
8 x 3 => Total : 216
8 x 4 => Total : 360
8 x 5 => Total : 540
8 x 6 => Total : 756
8 x 7 => Total : 1008
8 x 8 => Total : 1296
8 x 9 => Total : 1620
8 x 10 => Total : 1980
8 x 11 => Total : 2376
8 x 12 => Total : 2808
8 x 13 => Total : 3276
8 x 14 => Total : 3780
8 x 15 => Total : 4320
8 x 16 => Total : 4896
8 x 17 => Total : 5508
8 x 18 => Total : 6156
8 x 19 => Total : 6840
8 x 20 => Total : 7560
9 x 1 => Total : 45
9 x 2 => Total : 135
9 x 3 => Total : 270
9 x 4 => Total : 450
9 x 5 => Total : 675
9 x 6 => Total : 945
9 x 7 => Total : 1260
9 x 8 => Total : 1620
9 x 9 => Total : 2025
9 x 10 => Total : 2475
9 x 11 => Total : 2970
9 x 12 => Total : 3510
9 x 13 => Total : 4095
9 x 14 => Total : 4725
9 x 15 => Total : 5400
9 x 16 => Total : 6120
9 x 17 => Total : 6885
9 x 18 => Total : 7695
9 x 19 => Total : 8550
9 x 20 => Total : 9450
10 x 1 => Total : 55
10 x 2 => Total : 165
10 x 3 => Total : 330
10 x 4 => Total : 550
10 x 5 => Total : 825
10 x 6 => Total : 1155
10 x 7 => Total : 1540
10 x 8 => Total : 1980
10 x 9 => Total : 2475
10 x 10 => Total : 3025
10 x 11 => Total : 3630
10 x 12 => Total : 4290
10 x 13 => Total : 5005
10 x 14 => Total : 5775
10 x 15 => Total : 6600
10 x 16 => Total : 7480
10 x 17 => Total : 8415
10 x 18 => Total : 9405
10 x 19 => Total : 10450
10 x 20 => Total : 11550
11 x 1 => Total : 66
11 x 2 => Total : 198
11 x 3 => Total : 396
11 x 4 => Total : 660
11 x 5 => Total : 990
11 x 6 => Total : 1386
11 x 7 => Total : 1848
11 x 8 => Total : 2376
11 x 9 => Total : 2970
11 x 10 => Total : 3630
11 x 11 => Total : 4356
11 x 12 => Total : 5148
11 x 13 => Total : 6006
11 x 14 => Total : 6930
11 x 15 => Total : 7920
11 x 16 => Total : 8976
11 x 17 => Total : 10098
11 x 18 => Total : 11286
11 x 19 => Total : 12540
11 x 20 => Total : 13860
12 x 1 => Total : 78
12 x 2 => Total : 234
12 x 3 => Total : 468
12 x 4 => Total : 780
12 x 5 => Total : 1170
12 x 6 => Total : 1638
12 x 7 => Total : 2184
12 x 8 => Total : 2808
12 x 9 => Total : 3510
12 x 10 => Total : 4290
12 x 11 => Total : 5148
12 x 12 => Total : 6084
12 x 13 => Total : 7098
12 x 14 => Total : 8190
12 x 15 => Total : 9360
12 x 16 => Total : 10608
12 x 17 => Total : 11934
12 x 18 => Total : 13338
12 x 19 => Total : 14820
12 x 20 => Total : 16380
13 x 1 => Total : 91
13 x 2 => Total : 273
13 x 3 => Total : 546
13 x 4 => Total : 910
13 x 5 => Total : 1365
13 x 6 => Total : 1911
13 x 7 => Total : 2548
13 x 8 => Total : 3276
13 x 9 => Total : 4095
13 x 10 => Total : 5005
13 x 11 => Total : 6006
13 x 12 => Total : 7098
13 x 13 => Total : 8281
13 x 14 => Total : 9555
13 x 15 => Total : 10920
13 x 16 => Total : 12376
13 x 17 => Total : 13923
13 x 18 => Total : 15561
13 x 19 => Total : 17290
13 x 20 => Total : 19110
14 x 1 => Total : 105
14 x 2 => Total : 315
14 x 3 => Total : 630
14 x 4 => Total : 1050
14 x 5 => Total : 1575
14 x 6 => Total : 2205
14 x 7 => Total : 2940
14 x 8 => Total : 3780
14 x 9 => Total : 4725
14 x 10 => Total : 5775
14 x 11 => Total : 6930
14 x 12 => Total : 8190
14 x 13 => Total : 9555
14 x 14 => Total : 11025
14 x 15 => Total : 12600
14 x 16 => Total : 14280
14 x 17 => Total : 16065
14 x 18 => Total : 17955
14 x 19 => Total : 19950
14 x 20 => Total : 22050
15 x 1 => Total : 120
15 x 2 => Total : 360
15 x 3 => Total : 720
15 x 4 => Total : 1200
15 x 5 => Total : 1800
15 x 6 => Total : 2520
15 x 7 => Total : 3360
15 x 8 => Total : 4320
15 x 9 => Total : 5400
15 x 10 => Total : 6600
15 x 11 => Total : 7920
15 x 12 => Total : 9360
15 x 13 => Total : 10920
15 x 14 => Total : 12600
15 x 15 => Total : 14400
15 x 16 => Total : 16320
15 x 17 => Total : 18360
15 x 18 => Total : 20520
15 x 19 => Total : 22800
15 x 20 => Total : 25200
16 x 1 => Total : 136
16 x 2 => Total : 408
16 x 3 => Total : 816
16 x 4 => Total : 1360
16 x 5 => Total : 2040
16 x 6 => Total : 2856
16 x 7 => Total : 3808
16 x 8 => Total : 4896
16 x 9 => Total : 6120
16 x 10 => Total : 7480
16 x 11 => Total : 8976
16 x 12 => Total : 10608
16 x 13 => Total : 12376
16 x 14 => Total : 14280
16 x 15 => Total : 16320
16 x 16 => Total : 18496
16 x 17 => Total : 20808
16 x 18 => Total : 23256
16 x 19 => Total : 25840
16 x 20 => Total : 28560
17 x 1 => Total : 153
17 x 2 => Total : 459
17 x 3 => Total : 918
17 x 4 => Total : 1530
17 x 5 => Total : 2295
17 x 6 => Total : 3213
17 x 7 => Total : 4284
17 x 8 => Total : 5508
17 x 9 => Total : 6885
17 x 10 => Total : 8415
17 x 11 => Total : 10098
17 x 12 => Total : 11934
17 x 13 => Total : 13923
17 x 14 => Total : 16065
17 x 15 => Total : 18360
17 x 16 => Total : 20808
17 x 17 => Total : 23409
17 x 18 => Total : 26163
17 x 19 => Total : 29070
17 x 20 => Total : 32130
18 x 1 => Total : 171
18 x 2 => Total : 513
18 x 3 => Total : 1026
18 x 4 => Total : 1710
18 x 5 => Total : 2565
18 x 6 => Total : 3591
18 x 7 => Total : 4788
18 x 8 => Total : 6156
18 x 9 => Total : 7695
18 x 10 => Total : 9405
18 x 11 => Total : 11286
18 x 12 => Total : 13338
18 x 13 => Total : 15561
18 x 14 => Total : 17955
18 x 15 => Total : 20520
18 x 16 => Total : 23256
18 x 17 => Total : 26163
18 x 18 => Total : 29241
18 x 19 => Total : 32490
18 x 20 => Total : 35910
19 x 1 => Total : 190
19 x 2 => Total : 570
19 x 3 => Total : 1140
19 x 4 => Total : 1900
19 x 5 => Total : 2850
19 x 6 => Total : 3990
19 x 7 => Total : 5320
19 x 8 => Total : 6840
19 x 9 => Total : 8550
19 x 10 => Total : 10450
19 x 11 => Total : 12540
19 x 12 => Total : 14820
19 x 13 => Total : 17290
19 x 14 => Total : 19950
19 x 15 => Total : 22800
19 x 16 => Total : 25840
19 x 17 => Total : 29070
19 x 18 => Total : 32490
19 x 19 => Total : 36100
19 x 20 => Total : 39900
20 x 1 => Total : 210
20 x 2 => Total : 630
20 x 3 => Total : 1260
20 x 4 => Total : 2100
20 x 5 => Total : 3150
20 x 6 => Total : 4410
20 x 7 => Total : 5880
20 x 8 => Total : 7560
20 x 9 => Total : 9450
20 x 10 => Total : 11550
20 x 11 => Total : 13860
20 x 12 => Total : 16380
20 x 13 => Total : 19110
20 x 14 => Total : 22050
20 x 15 => Total : 25200
20 x 16 => Total : 28560
20 x 17 => Total : 32130
20 x 18 => Total : 35910
20 x 19 => Total : 39900
20 x 20 => Total : 44100