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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 14 |
| 3 | 450 |
| 4 | 31144 |
| 5 | 4041775 |
| 6 | 890769366 |
| 7 | 309205147860 |
| 8 | 159530833094816 |
| 9 | 116905524905145753 |
| 10 | 117339344873068964150 |
| 11 | 156605173710780053035502 |
| 12 | 271173392660354548224099528 |
| 13 | 596723380510396302812115056135 |
| 14 | 1639486267597614501043345413095854 |
| 15 | 5538914776834654404464150449671117000 |
| 16 | 22706307619073102796968257487359193429120 |
[1,1,14,450,31144,4041775,890769366,309205147860, 159530833094816,116905524905145753, 117339344873068964150,156605173710780053035502, 271173392660354548224099528, 596723380510396302812115056135, 1639486267597614501043345413095854, 5538914776834654404464150449671117000, 22706307619073102796968257487359193429120] |