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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 1 |
| 9 | 0 |
| 10 | 0 |
| 11 | 0 |
| 12 | 5 |
| 13 | 5 |
| 14 | 0 |
| 15 | 0 |
| 16 | 0 |
| 17 | 16 |
| 18 | 40 |
| 19 | 15 |
| 20 | 0 |
| 21 | 0 |
| 22 | 0 |
| 23 | 42 |
| 24 | 196 |
| 25 | 175 |
| 26 | 35 |
| 27 | 0 |
| 28 | 0 |
| 29 | 0 |
| 30 | 99 |
| 31 | 770 |
| 32 | 1211 |
| 33 | 560 |
| 34 | 70 |
| 35 | 0 |
| 36 | 0 |
| 37 | 0 |
| 38 | 219 |
| 39 | 2689 |
| 40 | 6594 |
| 41 | 5187 |
| 42 | 1470 |
| 43 | 126 |
| 44 | 0 |
| 45 | 0 |
| 46 | 0 |
| 47 | 466 |
| 48 | 8790 |
| 49 | 31585 |
| 50 | 37233 |
| 51 | 17535 |
| 52 | 3360 |
| 53 | 210 |
| 54 | 0 |
| 55 | 0 |
[0,0,0,0,0,0,0,1,0,0,0,5,5,0,0,0,16,40,15,0,0,0, 42,196,175,35,0,0,0,99,770,1211,560,70,0,0,0,219, 2689,6594,5187,1470,126,0,0,0,466,8790,31585, 37233,17535,3360,210,0,0] |