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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 17 |
| 3 | 356 |
| 4 | 15050 |
| 5 | 1090340 |
| 6 | 120880118 |
| 7 | 19006269152 |
| 8 | 4019815232183 |
| 9 | 1100169446737862 |
| 10 | 378260919290968391 |
| 11 | 159596027891781179588 |
| 12 | 81074448438738151958144 |
| 13 | 48811678984945504941033320 |
| 14 | 34368839633409849003075848348 |
| 15 | 27981522156103308265337853752864 |
[1,2,17,356,15050,1090340,120880118,19006269152, 4019815232183,1100169446737862,378260919290968391, 159596027891781179588,81074448438738151958144, 48811678984945504941033320, 34368839633409849003075848348, 27981522156103308265337853752864] |