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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 1 |
| 8 | 1 |
| 9 | 1 |
| 10 | 1 |
| 11 | 7 |
| 12 | 7 |
| 13 | 21 |
| 14 | 21 |
| 15 | 61 |
| 16 | 61 |
| 17 | 403 |
| 18 | 403 |
| 19 | 3415 |
| 20 | 3415 |
| 21 | 36395 |
| 22 | 36395 |
| 23 | 473261 |
| 24 | 473261 |
| 25 | 8291363 |
| 26 | 8291363 |
| 27 | 204964495 |
| 28 | 204964495 |
[1,1,1,1,1,1,1,1,1,1,7,7,21,21,61,61,403,403,3415, 3415,36395,36395,473261,473261,8291363,8291363, 204964495,204964495] |