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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 81 |
| 4 | 264 |
| 5 | 281 |
| 6 | 472 |
| 7 | 1147 |
| 8 | 2081 |
| 9 | 3207 |
| 10 | 3592 |
| 11 | 10479 |
| 12 | 12128 |
| 13 | 65875 |
| 14 | 114791 |
| 15 | 118885 |
[1,3,81,264,281,472,1147,2081,3207,3592,10479, 12128,65875,114791,118885] |