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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 65 |
| 3 | 1561 |
| 4 | 24485 |
| 5 | 420022 |
| 6 | 6665056 |
| 7 | 107190767 |
| 8 | 1690202297 |
| 9 | 26703076643 |
| 10 | 419073070413 |
| 11 | 6586631574597 |
| 12 | 103328644089460 |
| 13 | 1620642625082713 |
| 14 | 25414099830572878 |
| 15 | 398456044175351385 |
| 16 | 6246858252570134307 |
[1,65,1561,24485,420022,6665056,107190767, 1690202297,26703076643,419073070413,6586631574597, 103328644089460,1620642625082713, 25414099830572878,398456044175351385, 6246858252570134307] |