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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 29 |
| 5 | 229 |
| 6 | 1773 |
| 7 | 39925 |
| 8 | 1086663 |
| 9 | 55544427 |
| 10 | 4442151653 |
| 11 | 513575103485 |
[1,1,1,29,229,1773,39925,1086663,55544427, 4442151653,513575103485] |