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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 1 |
| 8 | 3 |
| 9 | 2 |
| 10 | 1 |
| 11 | 1 |
| 12 | 15 |
| 13 | 40 |
| 14 | 6 |
| 15 | 1 |
| 16 | 1 |
| 17 | 105 |
| 18 | 2240 |
| 19 | 1260 |
| 20 | 24 |
| 21 | 1 |
| 22 | 1 |
| 23 | 945 |
| 24 | 246400 |
| 25 | 1247400 |
| 26 | 72576 |
| 27 | 120 |
| 28 | 1 |
| 29 | 1 |
| 30 | 10395 |
| 31 | 44844800 |
| 32 | 3405402000 |
| 33 | 1743565824 |
| 34 | 6652800 |
| 35 | 720 |
| 36 | 1 |
| 37 | 1 |
| 38 | 135135 |
| 39 | 12197785600 |
| 40 | 19799007228000 |
| 41 | 162193467211776 |
| 42 | 4940103168000 |
| 43 | 889574400 |
| 44 | 5040 |
| 45 | 1 |
[1,1,1,1,1,1,1,3,2,1,1,15,40,6,1,1,105,2240,1260, 24,1,1,945,246400,1247400,72576,120,1,1,10395, 44844800,3405402000,1743565824,6652800,720,1,1, 135135,12197785600,19799007228000,162193467211776, 4940103168000,889574400,5040,1] |