A281251 as a triangular array
| | | | | | | | | 0 |
| | | | | | | | | 0 | | 0 |
| | | | | | | | 0 | | 0 | | 0 |
| | | | | | | 1 | | 12 | | 12 | | 1 |
| | | | | | 2 | | 139 | | 443 | | 139 | | 2 |
| | | | | 9 | | 1222 | | 8489 | | 8489 | | 1222 | | 9 |
| | | | 34 | | 9151 | | 105368 | | 197429 | | 105368 | | 9151 | | 34 |
| | | 124 | | 63138 | | 1113148 | | 3291920 | | 3291920 | | 1113148 | | 63138 | | 124 |
| | 432 | | 412070 | | 10598099 | | 47427679 | | 76670685 | | 47427679 | | 10598099 |
|
A281251 as a square array
0 | 0 | 0 | 1 | 2 | 9 | 34 | 124 | 432
| 0 | 0 | 12 | 139 | 1222 | 9151 | 63138 | 412070
| 0 | 12 | 443 | 8489 | 105368 | 1113148 | 10598099
| 1 | 139 | 8489 | 197429 | 3291920 | 47427679
| 2 | 1222 | 105368 | 3291920 | 76670685
| 9 | 9151 | 1113148 | 47427679
| 34 | 63138 | 10598099
| 124
|
A281251 as an upper right triangle
0 | 0 | 0 | 1 | 2 | 9 | 34 | 124 | 432
| | 0 | 0 | 12 | 139 | 1222 | 9151 | 63138 | 412070
| | | 0 | 12 | 443 | 8489 | 105368 | 1113148 | 10598099
| | | | 1 | 139 | 8489 | 197429 | 3291920 | 47427679
| | | | | 2 | 1222 | 105368 | 3291920 | 76670685
| | | | | | 9 | 9151 | 1113148 | 47427679
| | | | | | | 34 | 63138 | 10598099
| | | | | | | | 124
| | | | | | | |
|
|