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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 10 |
| 4 | 8 |
| 5 | 19 |
| 6 | 162 |
| 7 | 1853 |
| 8 | 2052 |
| 9 | 1633 |
| 10 | 26661 |
| 11 | 46782 |
| 12 | 3138650 |
| 13 | 1080330 |
[1,3,10,8,19,162,1853,2052,1633,26661,46782, 3138650,1080330] |