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| n | a(n) |
|---|---|
| 3 | 0 |
| 4 | 4 |
| 5 | 29 |
| 6 | 185 |
| 7 | 1314 |
| 8 | 10534 |
| 9 | 94839 |
| 10 | 948427 |
| 11 | 10432748 |
| 12 | 125193032 |
| 13 | 1627509489 |
| 14 | 22785132925 |
[0,4,29,185,1314,10534,94839,948427,10432748, 125193032,1627509489,22785132925] |