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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 252 |
| 5 | 1 |
| 6 | 1 |
| 7 | 3003 |
| 8 | 3003 |
| 9 | 1 |
| 10 | 1 |
| 11 | 15504 |
| 12 | 184756 |
| 13 | 15504 |
| 14 | 1 |
| 15 | 1 |
| 16 | 53130 |
| 17 | 3268760 |
| 18 | 3268760 |
| 19 | 53130 |
| 20 | 1 |
| 21 | 1 |
| 22 | 142506 |
| 23 | 30045015 |
| 24 | 155117520 |
| 25 | 30045015 |
| 26 | 142506 |
| 27 | 1 |
| 28 | 1 |
| 29 | 324632 |
| 30 | 183579396 |
| 31 | 3247943160 |
| 32 | 3247943160 |
| 33 | 183579396 |
| 34 | 324632 |
| 35 | 1 |
| 36 | 1 |
| 37 | 658008 |
| 38 | 847660528 |
| 39 | 40225345056 |
[1,1,1,1,252,1,1,3003,3003,1,1,15504,184756,15504, 1,1,53130,3268760,3268760,53130,1,1,142506, 30045015,155117520,30045015,142506,1,1,324632, 183579396,3247943160,3247943160,183579396,324632, 1,1,658008,847660528,40225345056] |