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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 364 |
| 3 | 16583 |
| 4 | 912870 |
| 5 | 49996267 |
| 6 | 2732579072 |
| 7 | 149393609720 |
| 8 | 8167589147618 |
| 9 | 446532771770396 |
| 10 | 24412539503593284 |
| 11 | 1334666071003250780 |
| 12 | 72967971344442853125 |
| 13 | 3989256160347007231716 |
| 14 | 218097946623385555664701 |
[0,364,16583,912870,49996267,2732579072, 149393609720,8167589147618,446532771770396, 24412539503593284,1334666071003250780, 72967971344442853125,3989256160347007231716, 218097946623385555664701] |