A181854 as a triangular array
| | | | | | | | | 1 |
| | | | | | | | | 1 | | 2 |
| | | | | | | | 1 | | 4 | | 6 |
| | | | | | | 1 | | 7 | | 18 | | 24 |
| | | | | | 1 | | 11 | | 42 | | 76 | | 88 |
| | | | | 1 | | 16 | | 97 | | 286 | | 468 | | 528 |
| | | | 1 | | 22 | | 163 | | 556 | | 1050 | | 1332 | | 1392 |
| | | 1 | | 29 | | 317 | | 1697 | | 4942 | | 8682 | | 10716 | | 11136 |
| | 1 | | 37 | | 493 | | 3209 | | 11502 | | 24770 | | 36108 | | 41016 | | 41856 |
|
A181854 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 2 | 4 | 7 | 11 | 16 | 22 | 29 | 37
| | 6 | 18 | 42 | 97 | 163 | 317 | 493
| | 24 | 76 | 286 | 556 | 1697 | 3209
| | 88 | 468 | 1050 | 4942 | 11502
| | 528 | 1332 | 8682 | 24770
| | 1392 | 10716 | 36108
| | 11136 | 41016
| | 41856
|
A181854 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 2 | 4 | 7 | 11 | 16 | 22 | 29 | 37
| | | 6 | 18 | 42 | 97 | 163 | 317 | 493
| | | | 24 | 76 | 286 | 556 | 1697 | 3209
| | | | | 88 | 468 | 1050 | 4942 | 11502
| | | | | | 528 | 1332 | 8682 | 24770
| | | | | | | 1392 | 10716 | 36108
| | | | | | | | 11136 | 41016
| | | | | | | | | 41856
|
|
