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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 3 |
| 3 | 2 |
| 4 | 138 |
| 5 | 349 |
| 6 | 19068 |
| 7 | 99205 |
| 8 | 5047477 |
| 9 | 58634971 |
| 10 | 2949491750 |
| 11 | 84689499509 |
| 12 | 5678370893063 |
[0,3,2,138,349,19068,99205,5047477,58634971, 2949491750,84689499509,5678370893063] |