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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 17 |
| 8 | 27 |
| 9 | 587 |
| 10 | 1133 |
| 11 | 10901 |
| 12 | 28287 |
| 13 | 585741 |
| 14 | 1701229 |
| 15 | 131274347 |
| 16 | 487724577 |
| 17 | 70353958073 |
| 18 | 323657950757 |
| 19 | 55264471537249 |
| 20 | 310091943069627 |
| 21 | 90510403672783457 |
| 22 | 614791345688856355 |
[1,1,1,1,1,1,17,27,587,1133,10901,28287,585741, 1701229,131274347,487724577,70353958073, 323657950757,55264471537249,310091943069627, 90510403672783457,614791345688856355] |