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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 0 |
| 3 | 2 |
| 4 | 0 |
| 5 | 0 |
| 6 | 12 |
| 7 | 6 |
| 8 | 0 |
| 9 | 0 |
| 10 | 0 |
| 11 | 128 |
| 12 | 186 |
| 13 | 108 |
| 14 | 24 |
| 15 | 0 |
| 16 | 0 |
| 17 | 0 |
| 18 | 0 |
| 19 | 2000 |
| 20 | 5640 |
| 21 | 7840 |
| 22 | 6540 |
| 23 | 3330 |
| 24 | 960 |
| 25 | 120 |
| 26 | 0 |
| 27 | 0 |
| 28 | 0 |
| 29 | 0 |
| 30 | 0 |
| 31 | 41472 |
| 32 | 189480 |
| 33 | 456720 |
| 34 | 730830 |
| 35 | 832370 |
| 36 | 690300 |
| 37 | 416160 |
| 38 | 178230 |
| 39 | 51480 |
| 40 | 9000 |
| 41 | 720 |
| 42 | 0 |
| 43 | 0 |
| 44 | 0 |
| 45 | 0 |
| 46 | 0 |
| 47 | 0 |
| 48 | 1075648 |
| 49 | 7178640 |
| 50 | 26035800 |
| 51 | 65339820 |
[1,0,2,0,0,12,6,0,0,0,128,186,108,24,0,0,0,0,2000, 5640,7840,6540,3330,960,120,0,0,0,0,0,41472, 189480,456720,730830,832370,690300,416160,178230, 51480,9000,720,0,0,0,0,0,0,1075648,7178640, 26035800,65339820] |