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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 10 |
| 3 | 255 |
| 4 | 12196 |
| 5 | 939155 |
| 6 | 106161756 |
| 7 | 16554165495 |
| 8 | 3404986723720 |
| 9 | 893137635015219 |
| 10 | 290965846152033460 |
| 11 | 115256679181251696803 |
| 12 | 54552992572663333862400 |
| 13 | 30406695393635479756804525 |
| 14 | 19712738332895648545008815416 |
| 15 | 14707436666152282009334357074335 |
[1,1,10,255,12196,939155,106161756,16554165495, 3404986723720,893137635015219,290965846152033460, 115256679181251696803,54552992572663333862400, 30406695393635479756804525, 19712738332895648545008815416, 14707436666152282009334357074335] |