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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 4 |
| 5 | 3 |
| 6 | 1 |
| 7 | 10 |
| 8 | 27 |
| 9 | 18 |
| 10 | 1 |
| 11 | 20 |
| 12 | 127 |
| 13 | 288 |
| 14 | 180 |
| 15 | 1 |
| 16 | 35 |
| 17 | 427 |
| 18 | 2193 |
| 19 | 4500 |
| 20 | 2700 |
| 21 | 1 |
| 22 | 56 |
| 23 | 1162 |
| 24 | 11160 |
| 25 | 50553 |
| 26 | 97200 |
| 27 | 56700 |
| 28 | 1 |
| 29 | 84 |
| 30 | 2730 |
| 31 | 43696 |
| 32 | 363033 |
| 33 | 1512684 |
| 34 | 2778300 |
| 35 | 1587600 |
| 36 | 1 |
| 37 | 120 |
| 38 | 5754 |
| 39 | 141976 |
| 40 | 1936089 |
| 41 | 14581872 |
| 42 | 57234924 |
| 43 | 101606400 |
| 44 | 57153600 |
[1,1,1,1,4,3,1,10,27,18,1,20,127,288,180,1,35,427, 2193,4500,2700,1,56,1162,11160,50553,97200,56700, 1,84,2730,43696,363033,1512684,2778300,1587600,1, 120,5754,141976,1936089,14581872,57234924, 101606400,57153600] |