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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 1 |
| 4 | 36 |
| 5 | 12 |
| 6 | 1 |
| 7 | 504 |
| 8 | 192 |
| 9 | 24 |
| 10 | 1 |
| 11 | 9576 |
| 12 | 3960 |
| 13 | 600 |
| 14 | 40 |
| 15 | 1 |
| 16 | 229824 |
| 17 | 100656 |
| 18 | 17160 |
| 19 | 1440 |
| 20 | 60 |
| 21 | 1 |
| 22 | 6664896 |
| 23 | 3048192 |
| 24 | 563976 |
| 25 | 54600 |
| 26 | 2940 |
| 27 | 84 |
| 28 | 1 |
| 29 | 226606464 |
| 30 | 107255232 |
| 31 | 21095424 |
| 32 | 2256576 |
| 33 | 142800 |
| 34 | 5376 |
| 35 | 112 |
| 36 | 1 |
| 37 | 8837652096 |
| 38 | 4302305280 |
| 39 | 887785920 |
| 40 | 102332160 |
| 41 | 7254576 |
| 42 | 325584 |
| 43 | 9072 |
| 44 | 144 |
| 45 | 1 |
[1,4,1,36,12,1,504,192,24,1,9576,3960,600,40,1, 229824,100656,17160,1440,60,1,6664896,3048192, 563976,54600,2940,84,1,226606464,107255232, 21095424,2256576,142800,5376,112,1,8837652096, 4302305280,887785920,102332160,7254576,325584, 9072,144,1] |