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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 4 |
| 6 | 0 |
| 7 | 2 |
| 8 | 8 |
| 9 | 14 |
| 10 | 0 |
| 11 | 6 |
| 12 | 44 |
| 13 | 105 |
| 14 | 52 |
| 15 | 0 |
| 16 | 12 |
| 17 | 150 |
| 18 | 630 |
| 19 | 550 |
| 20 | 206 |
| 21 | 0 |
| 22 | 28 |
| 23 | 540 |
| 24 | 4850 |
| 25 | 8544 |
| 26 | 5105 |
| 27 | 772 |
| 28 | 0 |
| 29 | 56 |
| 30 | 2042 |
| 31 | 31276 |
| 32 | 119506 |
| 33 | 125088 |
| 34 | 30918 |
| 35 | 2896 |
| 36 | 0 |
| 37 | 119 |
| 38 | 7760 |
| 39 | 250592 |
| 40 | 1729212 |
| 41 | 3640966 |
| 42 | 1835412 |
| 43 | 265920 |
| 44 | 10996 |
| 45 | 0 |
| 46 | 236 |
| 47 | 29654 |
| 48 | 1727836 |
[0,0,0,1,4,0,2,8,14,0,6,44,105,52,0,12,150,630, 550,206,0,28,540,4850,8544,5105,772,0,56,2042, 31276,119506,125088,30918,2896,0,119,7760,250592, 1729212,3640966,1835412,265920,10996,0,236,29654, 1727836] |