A008517 formatted as a triangular array:
| | | | | | | 1 | | | | | | | |
| | | | | | 1 | | 2 | | | | | | |
| | | | | 1 | | 8 | | 6 | | | | | |
| | | | 1 | | 22 | | 58 | | 24 | | | | |
| | | 1 | | 52 | | 328 | | 444 | | 120 | | | |
| | 1 | | 114 | | 1452 | | 4400 | | 3708 | | 720 | | |
| 1 | | 240 | | 5610 | | 32120 | | 58140 | | 33984 | | 5040 | |
| 1 | | 494 | | 19950 | | 195800 | | 644020 | | 785304 | | 341136 | | 40320 |
A008517 formatted as a square array:
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 2 | 8 | 22 | 52 | 114 | 240 | 494 | |
| 6 | 58 | 328 | 1452 | 5610 | 19950 | | |
| 24 | 444 | 4400 | 32120 | 195800 | | | |
| 120 | 3708 | 58140 | 644020 | | | | |
| 720 | 33984 | 785304 | | | | | |
| 5040 | 341136 | | | | | | |
| 40320 | | | | | | | |
A008517 formatted as an upper right triangle:
| 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 2 | 8 | 22 | 52 | 114 | 240 | 494 |
| | 6 | 58 | 328 | 1452 | 5610 | 19950 |
| | | 24 | 444 | 4400 | 32120 | 195800 |
| | | | 120 | 3708 | 58140 | 644020 |
| | | | | 720 | 33984 | 785304 |
| | | | | | 5040 | 341136 |
| | | | | | | 40320 |
|
