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| n | a(n) |
|---|---|
| -1 | 1 |
| 0 | 0 |
| 1 | 1 |
| 2 | 1 |
| 3 | 0 |
| 4 | 2 |
| 5 | 4 |
| 6 | 1 |
| 7 | 0 |
| 8 | 5 |
| 9 | 16 |
| 10 | 4 |
| 11 | 2 |
| 12 | 0 |
| 13 | 15 |
| 14 | 70 |
| 15 | 16 |
| 16 | 8 |
| 17 | 5 |
| 18 | 0 |
| 19 | 52 |
| 20 | 334 |
| 21 | 70 |
| 22 | 32 |
| 23 | 20 |
| 24 | 15 |
| 25 | 0 |
| 26 | 203 |
| 27 | 1720 |
| 28 | 334 |
| 29 | 140 |
| 30 | 80 |
| 31 | 60 |
| 32 | 52 |
| 33 | 0 |
| 34 | 877 |
| 35 | 9478 |
| 36 | 1720 |
| 37 | 668 |
| 38 | 350 |
| 39 | 240 |
| 40 | 208 |
| 41 | 203 |
| 42 | 0 |
| 43 | 4140 |
| 44 | 55522 |
| 45 | 9478 |
| 46 | 3440 |
| 47 | 1670 |
| 48 | 1050 |
| 49 | 832 |
| 50 | 812 |
| 51 | 877 |
| 52 | 0 |
| 53 | 21147 |
[1,0,1,1,0,2,4,1,0,5,16,4,2,0,15,70,16,8,5,0,52, 334,70,32,20,15,0,203,1720,334,140,80,60,52,0,877, 9478,1720,668,350,240,208,203,0,4140,55522,9478, 3440,1670,1050,832,812,877,0,21147] |