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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 24 |
| 5 | 393 |
| 6 | 11043 |
| 7 | 473041 |
| 8 | 28601334 |
| 9 | 2315263942 |
| 10 | 241478700774 |
| 11 | 31517159612387 |
| 12 | 5030510468876181 |
| 13 | 963773726037574349 |
| 14 | 218238081089074417113 |
| 15 | 57654070089428439591645 |
| 16 | 17573072391553388287162662 |
| 17 | 6120849041684563565434585529 |
[1,1,3,24,393,11043,473041,28601334,2315263942, 241478700774,31517159612387,5030510468876181, 963773726037574349,218238081089074417113, 57654070089428439591645, 17573072391553388287162662, 6120849041684563565434585529] |