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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 47 |
| 8 | 87 |
| 9 | 827 |
| 10 | 1813 |
| 11 | 23847 |
| 12 | 61833 |
| 13 | 1905275 |
| 14 | 6035973 |
| 15 | 614447855 |
| 16 | 2474833329 |
| 17 | 318082536355 |
| 18 | 1576923345267 |
| 19 | 332168016129555 |
| 20 | 2011400450726835 |
| 21 | 916006897110162895 |
| 22 | 6848186045213206995 |
| 23 | 6424521065702879448173 |
[1,1,1,1,1,1,47,87,827,1813,23847,61833,1905275, 6035973,614447855,2474833329,318082536355, 1576923345267,332168016129555,2011400450726835, 916006897110162895,6848186045213206995, 6424521065702879448173] |