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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 0 |
| 2 | 121 |
| 3 | 2299 |
| 4 | 6061 |
| 5 | 43681 |
| 6 | 66671 |
| 7 | 33659659 |
| 8 | 187891 |
| 9 | 1266749 |
| 10 | 8067191 |
| 11 | 639533521 |
| 12 | 2066801 |
[2,0,121,2299,6061,43681,66671,33659659,187891, 1266749,8067191,639533521,2066801] |