A291260 as a triangular array
| | | | | | | | | 1 |
| | | | | | | | | 1 | | 1 |
| | | | | | | | 1 | | 2 | | 2 |
| | | | | | | 1 | | 4 | | 12 | | 5 |
| | | | | | 1 | | 8 | | 80 | | 120 | | 14 |
| | | | | 1 | | 16 | | 576 | | 3904 | | 1680 | | 42 |
| | | | 1 | | 32 | | 4352 | | 152064 | | 354560 | | 30240 | | 132 |
| | | 1 | | 64 | | 33792 | | 6492160 | | 99422208 | | 51733504 | | 665280 | | 429 |
| | 1 | | 128 | | 266240 | | 290488320 | | 31832735744 | | 130292416512 | | 11070525440 | | 17297280 | | 1430 |
|
A291260 as a square array
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128
| | 2 | 12 | 80 | 576 | 4352 | 33792 | 266240
| | 5 | 120 | 3904 | 152064 | 6492160 | 290488320
| | 14 | 1680 | 354560 | 99422208 | 31832735744
| | 42 | 30240 | 51733504 | 130292416512
| | 132 | 665280 | 11070525440
| | 429 | 17297280
| | 1430
|
A291260 as an upper right triangle
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
| | 1 | 2 | 4 | 8 | 16 | 32 | 64 | 128
| | | 2 | 12 | 80 | 576 | 4352 | 33792 | 266240
| | | | 5 | 120 | 3904 | 152064 | 6492160 | 290488320
| | | | | 14 | 1680 | 354560 | 99422208 | 31832735744
| | | | | | 42 | 30240 | 51733504 | 130292416512
| | | | | | | 132 | 665280 | 11070525440
| | | | | | | | 429 | 17297280
| | | | | | | | | 1430
|
|
