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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 23 |
| 3 | 53 |
| 4 | 853 |
| 5 | 11869 |
| 6 | 117267 |
| 7 | 339615 |
| 8 | 3600489 |
| 9 | 96643287 |
| 10 | 2664167025 |
| 11 | 43435512311 |
| 12 | 501169672991 |
| 13 | 745288471601 |
| 14 | 12255356398093 |
| 15 | 153713440932055 |
| 16 | 6361476515268337 |
[1,23,53,853,11869,117267,339615,3600489,96643287, 2664167025,43435512311,501169672991,745288471601, 12255356398093,153713440932055,6361476515268337] |