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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 1 |
| 3 | 10 |
| 4 | 6 |
| 5 | 1 |
| 6 | 48 |
| 7 | 30 |
| 8 | 9 |
| 9 | 1 |
| 10 | 312 |
| 11 | 192 |
| 12 | 60 |
| 13 | 12 |
| 14 | 1 |
| 15 | 2520 |
| 16 | 1560 |
| 17 | 480 |
| 18 | 100 |
| 19 | 15 |
| 20 | 1 |
| 21 | 24480 |
| 22 | 15120 |
| 23 | 4680 |
| 24 | 960 |
| 25 | 150 |
| 26 | 18 |
| 27 | 1 |
| 28 | 277200 |
| 29 | 171360 |
| 30 | 52920 |
| 31 | 10920 |
| 32 | 1680 |
| 33 | 210 |
| 34 | 21 |
| 35 | 1 |
| 36 | 3588480 |
| 37 | 2217600 |
| 38 | 685440 |
| 39 | 141120 |
| 40 | 21840 |
| 41 | 2688 |
| 42 | 280 |
| 43 | 24 |
| 44 | 1 |
| 45 | 52254720 |
| 46 | 32296320 |
| 47 | 9979200 |
| 48 | 2056320 |
| 49 | 317520 |
| 50 | 39312 |
| 51 | 4032 |
| 52 | 360 |
| 53 | 27 |
| 54 | 1 |
[1,3,1,10,6,1,48,30,9,1,312,192,60,12,1,2520,1560, 480,100,15,1,24480,15120,4680,960,150,18,1,277200, 171360,52920,10920,1680,210,21,1,3588480,2217600, 685440,141120,21840,2688,280,24,1,52254720, 32296320,9979200,2056320,317520,39312,4032,360,27, 1] |