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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 2 |
| 6 | 1 |
| 7 | 1 |
| 8 | 6 |
| 9 | 15 |
| 10 | 20 |
| 11 | 15 |
| 12 | 6 |
| 13 | 1 |
| 14 | 1 |
| 15 | 24 |
| 16 | 276 |
| 17 | 2024 |
| 18 | 10626 |
| 19 | 42504 |
| 20 | 134596 |
| 21 | 346104 |
| 22 | 735471 |
| 23 | 1307504 |
| 24 | 1961256 |
| 25 | 2496144 |
| 26 | 2704156 |
| 27 | 2496144 |
| 28 | 1961256 |
| 29 | 1307504 |
| 30 | 735471 |
| 31 | 346104 |
| 32 | 134596 |
| 33 | 42504 |
| 34 | 10626 |
| 35 | 2024 |
| 36 | 276 |
| 37 | 24 |
| 38 | 1 |
| 39 | 1 |
| 40 | 120 |
| 41 | 7140 |
| 42 | 280840 |
| 43 | 8214570 |
| 44 | 190578024 |
[1,1,1,1,1,2,1,1,6,15,20,15,6,1,1,24,276,2024, 10626,42504,134596,346104,735471,1307504,1961256, 2496144,2704156,2496144,1961256,1307504,735471, 346104,134596,42504,10626,2024,276,24,1,1,120, 7140,280840,8214570,190578024] |