A221255 as a triangular array
| | | | | | | | | | 0 |
| | | | | | | | | | 1 | | 0 |
| | | | | | | | | 2 | | 4 | | 0 |
| | | | | | | | 4 | | 8 | | 16 | | 0 |
| | | | | | | 8 | | 81 | | 30 | | 64 | | 0 |
| | | | | | 16 | | 392 | | 2116 | | 112 | | 256 | | 0 |
| | | | | 32 | | 2500 | | 22268 | | 58081 | | 418 | | 1024 | | 0 |
| | | | 64 | | 14112 | | 488601 | | 1319409 | | 1612900 | | 1560 | | 4096 | | 0 |
| | | 128 | | 83521 | | 7356420 | | 103489929 | | 78633756 | | 44903401 | | 5822 | | 16384 | | 0 |
| | 256 | | 484128 | | 132273001 |
|
A221255 as a square array
0 | 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128 | 256
| 0 | 4 | 8 | 81 | 392 | 2500 | 14112 | 83521 | 484128
| 0 | 16 | 30 | 2116 | 22268 | 488601 | 7356420 | 132273001
| 0 | 64 | 112 | 58081 | 1319409 | 103489929
| 0 | 256 | 418 | 1612900 | 78633756
| 0 | 1024 | 1560 | 44903401
| 0 | 4096 | 5822
| 0 | 16384
| 0
|
A221255 as an upper right triangle
0 | 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128 | 256
| | 0 | 4 | 8 | 81 | 392 | 2500 | 14112 | 83521 | 484128
| | | 0 | 16 | 30 | 2116 | 22268 | 488601 | 7356420 | 132273001
| | | | 0 | 64 | 112 | 58081 | 1319409 | 103489929
| | | | | 0 | 256 | 418 | 1612900 | 78633756
| | | | | | 0 | 1024 | 1560 | 44903401
| | | | | | | 0 | 4096 | 5822
| | | | | | | | 0 | 16384
| | | | | | | | | 0
| | | | | | | | |
|
|