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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 10 |
| 5 | 98 |
| 6 | 1960 |
| 7 | 80176 |
| 8 | 6686760 |
| 9 | 1129588960 |
| 10 | 384610774696 |
| 11 | 263104175114712 |
| 12 | 360908867732030980 |
| 13 | 991603865814038728388 |
| 14 | 5453395569997436383751204 |
| 15 | 60010050181461052836515513108 |
| 16 | 1321051495313052133670927704328040 |
| 17 | 58170762510305449187073353930875222256 |
[1,1,2,10,98,1960,80176,6686760,1129588960, 384610774696,263104175114712,360908867732030980, 991603865814038728388,5453395569997436383751204, 60010050181461052836515513108, 1321051495313052133670927704328040, 58170762510305449187073353930875222256] |