A157156 as a triangular array
| | | | | | | | | 1 |
| | | | | | | | | 1 | | 1 |
| | | | | | | | 1 | | 7 | | 1 |
| | | | | | | 1 | | 43 | | 43 | | 1 |
| | | | | | 1 | | 259 | | 806 | | 259 | | 1 |
| | | | | 1 | | 1555 | | 11720 | | 11720 | | 1555 | | 1 |
| | | | 1 | | 9331 | | 151215 | | 338770 | | 151215 | | 9331 | | 1 |
| | | 1 | | 55987 | | 1828221 | | 7892635 | | 7892635 | | 1828221 | | 55987 | | 1 |
| | 1 | | 335923 | | 21286168 | | 162474781 | | 304389070 | | 162474781 | | 21286168 | | 335923 | | 1 |
|
A157156 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 7 | 43 | 259 | 1555 | 9331 | 55987 | 335923
| | 1 | 43 | 806 | 11720 | 151215 | 1828221 | 21286168
| | 1 | 259 | 11720 | 338770 | 7892635 | 162474781
| | 1 | 1555 | 151215 | 7892635 | 304389070
| | 1 | 9331 | 1828221 | 162474781
| | 1 | 55987 | 21286168
| | 1 | 335923
| | 1
|
A157156 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 7 | 43 | 259 | 1555 | 9331 | 55987 | 335923
| | | 1 | 43 | 806 | 11720 | 151215 | 1828221 | 21286168
| | | | 1 | 259 | 11720 | 338770 | 7892635 | 162474781
| | | | | 1 | 1555 | 151215 | 7892635 | 304389070
| | | | | | 1 | 9331 | 1828221 | 162474781
| | | | | | | 1 | 55987 | 21286168
| | | | | | | | 1 | 335923
| | | | | | | | | 1
|
|
