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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 40 |
| 3 | 1751 |
| 4 | 136516 |
| 5 | 16993932 |
| 6 | 3112631737 |
| 7 | 792794568624 |
| 8 | 269047552566188 |
| 9 | 117558189248146187 |
| 10 | 64343348623810658670 |
| 11 | 43136101281780352785381 |
| 12 | 34769493663713954019980281 |
| 13 | 33175795620329111188048543481 |
| 14 | 36981665738825428991431755534146 |
[1,2,40,1751,136516,16993932,3112631737, 792794568624,269047552566188,117558189248146187, 64343348623810658670,43136101281780352785381, 34769493663713954019980281, 33175795620329111188048543481, 36981665738825428991431755534146] |