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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 0 |
| 5 | 3 |
| 6 | 1 |
| 7 | -2 |
| 8 | 3 |
| 9 | 6 |
| 10 | 1 |
| 11 | 0 |
| 12 | -10 |
| 13 | 15 |
| 14 | 10 |
| 15 | 1 |
| 16 | 16 |
| 17 | -30 |
| 18 | -15 |
| 19 | 45 |
| 20 | 15 |
| 21 | 1 |
| 22 | 0 |
| 23 | 112 |
| 24 | -210 |
| 25 | 35 |
| 26 | 105 |
| 27 | 21 |
| 28 | 1 |
| 29 | -272 |
| 30 | 588 |
| 31 | 28 |
| 32 | -735 |
| 33 | 280 |
| 34 | 210 |
| 35 | 28 |
| 36 | 1 |
| 37 | 0 |
| 38 | -2448 |
| 39 | 5292 |
| 40 | -2436 |
| 41 | -1575 |
| 42 | 1008 |
| 43 | 378 |
| 44 | 36 |
| 45 | 1 |
| 46 | 7936 |
| 47 | -18960 |
| 48 | 4140 |
| 49 | 20160 |
| 50 | -14595 |
| 51 | -1575 |
| 52 | 2730 |
| 53 | 630 |
| 54 | 45 |
| 55 | 1 |
[1,1,1,0,3,1,-2,3,6,1,0,-10,15,10,1,16,-30,-15,45, 15,1,0,112,-210,35,105,21,1,-272,588,28,-735,280, 210,28,1,0,-2448,5292,-2436,-1575,1008,378,36,1, 7936,-18960,4140,20160,-14595,-1575,2730,630,45,1] |