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| n | a(n) |
|---|---|
| 3 | 181 |
| 4 | 480 |
| 5 | 1418 |
| 6 | 4548 |
| 7 | 15254 |
| 8 | 52784 |
| 9 | 186386 |
| 10 | 666284 |
| 11 | 2398206 |
| 12 | 8661032 |
[181,480,1418,4548,15254,52784,186386,666284, 2398206,8661032] |