| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 22 |
| 4 | 317 |
| 5 | 7976 |
| 6 | 329167 |
| 7 | 21511036 |
| 8 | 2187830521 |
| 9 | 343670351392 |
| 10 | 83118756921371 |
| 11 | 30891910810811084 |
| 12 | 17606061819337679173 |
| 13 | 15347380239670729742272 |
| 14 | 20404520526924833144453623 |
| 15 | 41254672227383167503175726876 |
| 16 | 126484184787351358506375259745393 |
[1,1,3,22,317,7976,329167,21511036,2187830521, 343670351392,83118756921371,30891910810811084, 17606061819337679173,15347380239670729742272, 20404520526924833144453623, 41254672227383167503175726876, 126484184787351358506375259745393] |