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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 11 |
| 4 | 131 |
| 5 | 2888 |
| 6 | 107027 |
| 7 | 6212005 |
| 8 | 534389458 |
| 9 | 65203760863 |
| 10 | 10889677250198 |
| 11 | 2417582805875622 |
| 12 | 696275799766601842 |
| 13 | 254839529849806176727 |
| 14 | 116462397939843834894367 |
| 15 | 65452132793842930368844779 |
| 16 | 44638474752168615525812508053 |
| 17 | 36514339485766910607857620043816 |
[1,1,2,11,131,2888,107027,6212005,534389458, 65203760863,10889677250198,2417582805875622, 696275799766601842,254839529849806176727, 116462397939843834894367, 65452132793842930368844779, 44638474752168615525812508053, 36514339485766910607857620043816] |