A211561 as a triangular array
| | | | | | | | | | 1 |
| | | | | | | | | | 1 | | 2 |
| | | | | | | | | 1 | | 4 | | 5 |
| | | | | | | | 1 | | 7 | | 14 | | 15 |
| | | | | | | 1 | | 11 | | 36 | | 51 | | 52 |
| | | | | | 1 | | 16 | | 81 | | 171 | | 202 | | 203 |
| | | | | 1 | | 22 | | 162 | | 512 | | 813 | | 876 | | 877 |
| | | | 1 | | 29 | | 295 | | 1345 | | 3046 | | 4012 | | 4139 | | 4140 |
| | | 1 | | 37 | | 499 | | 3145 | | 10096 | | 17866 | | 20891 | | 21146 | | 21147 |
| | 1 | | 46 | | 796 | | 6676 | | 29503 | | 72028 | | 106133 | | 115463 | | 115974 | | 115975 |
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A211561 as a square array
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| 2 | 4 | 7 | 11 | 16 | 22 | 29 | 37 | 46
| 5 | 14 | 36 | 81 | 162 | 295 | 499 | 796
| 15 | 51 | 171 | 512 | 1345 | 3145 | 6676
| 52 | 202 | 813 | 3046 | 10096 | 29503
| 203 | 876 | 4012 | 17866 | 72028
| 877 | 4139 | 20891 | 106133
| 4140 | 21146 | 115463
| 21147 | 115974
| 115975
|
A211561 as an upper right triangle
1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 2 | 4 | 7 | 11 | 16 | 22 | 29 | 37 | 46
| | | 5 | 14 | 36 | 81 | 162 | 295 | 499 | 796
| | | | 15 | 51 | 171 | 512 | 1345 | 3145 | 6676
| | | | | 52 | 202 | 813 | 3046 | 10096 | 29503
| | | | | | 203 | 876 | 4012 | 17866 | 72028
| | | | | | | 877 | 4139 | 20891 | 106133
| | | | | | | | 4140 | 21146 | 115463
| | | | | | | | | 21147 | 115974
| | | | | | | | | | 115975
|
|