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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 1 |
| 4 | 3 |
| 5 | 15 |
| 6 | 1 |
| 7 | 4 |
| 8 | 28 |
| 9 | 280 |
| 10 | 1 |
| 11 | 5 |
| 12 | 45 |
| 13 | 585 |
| 14 | 9945 |
| 15 | 1 |
| 16 | 6 |
| 17 | 66 |
| 18 | 1056 |
| 19 | 22176 |
| 20 | 576576 |
| 21 | 1 |
| 22 | 7 |
| 23 | 91 |
| 24 | 1729 |
| 25 | 43225 |
| 26 | 1339975 |
| 27 | 49579075 |
| 28 | 1 |
| 29 | 8 |
| 30 | 120 |
| 31 | 2640 |
| 32 | 76560 |
| 33 | 2756160 |
| 34 | 118514880 |
| 35 | 5925744000 |
| 36 | 1 |
| 37 | 9 |
| 38 | 153 |
| 39 | 3825 |
| 40 | 126225 |
| 41 | 5175225 |
| 42 | 253586025 |
| 43 | 14454403425 |
| 44 | 939536222625 |
[1,1,2,1,3,15,1,4,28,280,1,5,45,585,9945,1,6,66, 1056,22176,576576,1,7,91,1729,43225,1339975, 49579075,1,8,120,2640,76560,2756160,118514880, 5925744000,1,9,153,3825,126225,5175225,253586025, 14454403425,939536222625] |