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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 10 |
| 5 | 5 |
| 6 | 36 |
| 7 | 7 |
| 8 | 120 |
| 9 | 45 |
| 10 | 90 |
| 11 | 0 |
| 12 | 924 |
| 13 | 0 |
| 14 | 182 |
| 15 | 210 |
| 16 | 3860 |
| 17 | 0 |
| 18 | 3060 |
| 19 | 0 |
| 20 | 3800 |
| 21 | 420 |
| 22 | 0 |
| 23 | 0 |
| 24 | 61824 |
| 25 | 300 |
| 26 | 0 |
| 27 | 3627 |
| 28 | 10584 |
| 29 | 0 |
| 30 | 25230 |
| 31 | 0 |
| 32 | 375968 |
| 33 | 0 |
| 34 | 0 |
| 35 | 1190 |
| 36 | 441000 |
| 37 | 0 |
| 38 | 0 |
| 39 | 0 |
| 40 | 426400 |
| 41 | 0 |
| 42 | 70602 |
| 43 | 0 |
| 44 | 0 |
| 45 | 44550 |
| 46 | 0 |
| 47 | 0 |
| 48 | 11936496 |
| 49 | 1176 |
| 50 | 58800 |
| 51 | 0 |
| 52 | 0 |
| 53 | 0 |
| 54 | 1491102 |
| 55 | 0 |
| 56 | 1638560 |
[1,2,3,10,5,36,7,120,45,90,0,924,0,182,210,3860,0, 3060,0,3800,420,0,0,61824,300,0,3627,10584,0, 25230,0,375968,0,0,1190,441000,0,0,0,426400,0, 70602,0,0,44550,0,0,11936496,1176,58800,0,0,0, 1491102,0,1638560] |