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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 2 |
| 6 | 0 |
| 7 | 0 |
| 8 | 14 |
| 9 | 14 |
| 10 | 0 |
| 11 | 0 |
| 12 | 80 |
| 13 | 264 |
| 14 | 80 |
| 15 | 0 |
| 16 | 0 |
| 17 | 436 |
| 18 | 4794 |
| 19 | 4794 |
| 20 | 436 |
| 21 | 0 |
| 22 | 0 |
| 23 | 2346 |
| 24 | 83304 |
| 25 | 280900 |
| 26 | 83304 |
| 27 | 2346 |
| 28 | 0 |
| 29 | 0 |
| 30 | 12578 |
| 31 | 1435808 |
| 32 | 15836932 |
| 33 | 15836932 |
| 34 | 1435808 |
| 35 | 12578 |
| 36 | 0 |
| 37 | 0 |
| 38 | 67368 |
| 39 | 24673352 |
| 40 | 886416182 |
| 41 | 2891592224 |
| 42 | 886416182 |
| 43 | 24673352 |
| 44 | 67368 |
| 45 | 0 |
| 46 | 0 |
| 47 | 360720 |
[0,0,0,0,2,0,0,14,14,0,0,80,264,80,0,0,436,4794, 4794,436,0,0,2346,83304,280900,83304,2346,0,0, 12578,1435808,15836932,15836932,1435808,12578,0,0, 67368,24673352,886416182,2891592224,886416182, 24673352,67368,0,0,360720] |