A157402 as a triangular array
| | | | | | | | | 1 |
| | | | | | | | | 1 | | 2 |
| | | | | | | | 1 | | 6 | | 10 |
| | | | | | | 1 | | 24 | | 40 | | 80 |
| | | | | | 1 | | 80 | | 300 | | 400 | | 880 |
| | | | | 1 | | 330 | | 2400 | | 3600 | | 5280 | | 12320 |
| | | | 1 | | 1302 | | 15750 | | 47600 | | 55440 | | 86240 | | 209440 |
| | | 1 | | 5936 | | 129360 | | 588000 | | 837760 | | 1034880 | | 1675520 | | 4188800 |
| | 1 | | 26784 | | 1146040 | | 5856480 |
|
A157402 as a square array
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| 2 | 6 | 24 | 80 | 330 | 1302 | 5936 | 26784
| 10 | 40 | 300 | 2400 | 15750 | 129360 | 1146040
| 80 | 400 | 3600 | 47600 | 588000 | 5856480
| 880 | 5280 | 55440 | 837760
| 12320 | 86240 | 1034880
| 209440 | 1675520
| 4188800
|
A157402 as an upper right triangle
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 2 | 6 | 24 | 80 | 330 | 1302 | 5936 | 26784
| | | 10 | 40 | 300 | 2400 | 15750 | 129360 | 1146040
| | | | 80 | 400 | 3600 | 47600 | 588000 | 5856480
| | | | | 880 | 5280 | 55440 | 837760
| | | | | | 12320 | 86240 | 1034880
| | | | | | | 209440 | 1675520
| | | | | | | | 4188800
| | | | | | | |
|
|