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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 | 13 |
| 12 | 13 |
| 13 | 41 |
| 14 | 41 |
| 15 | 245 |
| 16 | 245 |
| 17 | 1633 |
| 18 | 1633 |
| 19 | 20989 |
| 20 | 20989 |
| 21 | 305457 |
| 22 | 305457 |
| 23 | 6244799 |
| 24 | 6244799 |
| 25 | 168722653 |
| 26 | 168722653 |
[1,1,1,1,1,1,1,1,1,1,13,13,41,41,245,245,1633, 1633,20989,20989,305457,305457,6244799,6244799, 168722653,168722653] |