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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 1 |
| 3 | 0 |
| 4 | 1 |
| 5 | 2 |
| 6 | 0 |
| 7 | 4 |
| 8 | 6 |
| 9 | 5 |
| 10 | 0 |
| 11 | 27 |
| 12 | 36 |
| 13 | 28 |
| 14 | 14 |
| 15 | 0 |
| 16 | 248 |
| 17 | 310 |
| 18 | 225 |
| 19 | 120 |
| 20 | 42 |
| 21 | 0 |
| 22 | 2830 |
| 23 | 3396 |
| 24 | 2332 |
| 25 | 1210 |
| 26 | 495 |
| 27 | 132 |
| 28 | 0 |
| 29 | 38232 |
| 30 | 44604 |
| 31 | 29302 |
| 32 | 14560 |
| 33 | 6006 |
| 34 | 2002 |
| 35 | 429 |
| 36 | 0 |
| 37 | 593859 |
| 38 | 678696 |
| 39 | 430200 |
| 40 | 204540 |
| 41 | 81900 |
| 42 | 28392 |
| 43 | 8008 |
| 44 | 1430 |
| 45 | 0 |
| 46 | 10401712 |
| 47 | 11701926 |
| 48 | 7204821 |
| 49 | 3289296 |
| 50 | 1263780 |
| 51 | 431256 |
| 52 | 129948 |
| 53 | 31824 |
| 54 | 4862 |
[1,0,1,0,1,2,0,4,6,5,0,27,36,28,14,0,248,310,225, 120,42,0,2830,3396,2332,1210,495,132,0,38232, 44604,29302,14560,6006,2002,429,0,593859,678696, 430200,204540,81900,28392,8008,1430,0,10401712, 11701926,7204821,3289296,1263780,431256,129948, 31824,4862] |