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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 2 |
| 6 | 1 |
| 7 | 2 |
| 8 | 1 |
| 9 | 4 |
| 10 | 2 |
| 11 | 25 |
| 12 | 2 |
| 13 | 71 |
| 14 | 92 |
| 15 | 184 |
| 16 | 1632 |
| 17 | 1057 |
| 18 | 20398 |
| 19 | 11743 |
| 20 | 195759 |
| 21 | 143498 |
| 22 | 1579976 |
| 23 | 1504704 |
| 24 | 11198739 |
| 25 | 13454232 |
| 26 | 71662966 |
[1,1,1,1,2,1,2,1,4,2,25,2,71,92,184,1632,1057, 20398,11743,195759,143498,1579976,1504704, 11198739,13454232,71662966] |