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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 84 |
| 3 | 23661 |
| 4 | 10457226 |
| 5 | 4694959782 |
| 6 | 1652619440763 |
| 7 | 398328574277322 |
| 8 | 63219027201690907 |
| 9 | 6740977636445383462 |
| 10 | 504159442506496670736 |
| 11 | 27687580787169017905476 |
| 12 | 1163412004001644179602800 |
[1,84,23661,10457226,4694959782,1652619440763, 398328574277322,63219027201690907, 6740977636445383462,504159442506496670736, 27687580787169017905476,1163412004001644179602800] |