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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 1 |
| 5 | 6 |
| 6 | 6 |
| 7 | 1 |
| 8 | 14 |
| 9 | 74 |
| 10 | 24 |
| 11 | 1 |
| 12 | 34 |
| 13 | 574 |
| 14 | 1880 |
| 15 | 120 |
| 16 | 1 |
| 17 | 92 |
| 18 | 4564 |
| 19 | 68876 |
| 20 | 80316 |
| 21 | 720 |
| 22 | 1 |
| 23 | 258 |
| 24 | 41526 |
| 25 | 2316638 |
| 26 | 18375702 |
| 27 | 5141864 |
| 28 | 5040 |
| 29 | 1 |
| 30 | 722 |
| 31 | 419516 |
| 32 | 94747953 |
| 33 | 3291772332 |
| 34 | 9213264418 |
| 35 | 458608016 |
| 36 | 40320 |
| 37 | 1 |
| 38 | 2022 |
| 39 | 4351224 |
| 40 | 4581555620 |
[1,1,2,1,6,6,1,14,74,24,1,34,574,1880,120,1,92, 4564,68876,80316,720,1,258,41526,2316638,18375702, 5141864,5040,1,722,419516,94747953,3291772332, 9213264418,458608016,40320,1,2022,4351224, 4581555620] |