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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 1 |
| 8 | 1 |
| 9 | 57 |
| 10 | 101 |
| 11 | 643 |
| 12 | 1213 |
| 13 | 11025 |
| 14 | 24069 |
| 15 | 404103 |
| 16 | 1045647 |
| 17 | 63992333 |
| 18 | 202749207 |
| 19 | 15427634943 |
| 20 | 58155611415 |
| 21 | 5752715311031 |
| 22 | 25613170526609 |
| 23 | 4354577724343601 |
| 24 | 22986304172716415 |
| 25 | 7655445641728562265 |
[1,1,1,1,1,1,1,1,57,101,643,1213,11025,24069, 404103,1045647,63992333,202749207,15427634943, 58155611415,5752715311031,25613170526609, 4354577724343601,22986304172716415, 7655445641728562265] |