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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 0 |
| 4 | 1 |
| 5 | 2 |
| 6 | 0 |
| 7 | 1 |
| 8 | 3 |
| 9 | 6 |
| 10 | 0 |
| 11 | 1 |
| 12 | 11 |
| 13 | 20 |
| 14 | 30 |
| 15 | 0 |
| 16 | 1 |
| 17 | 29 |
| 18 | 268 |
| 19 | 138 |
| 20 | 192 |
| 21 | 0 |
| 22 | 1 |
| 23 | 93 |
| 24 | 2324 |
| 25 | 17658 |
| 26 | 1488 |
| 27 | 1560 |
| 28 | 0 |
| 29 | 1 |
| 30 | 268 |
| 31 | 28318 |
| 32 | 414138 |
| 33 | 1696920 |
| 34 | 20400 |
| 35 | 15120 |
| 36 | 0 |
| 37 | 1 |
| 38 | 842 |
| 39 | 315196 |
| 40 | 28493946 |
| 41 | 134764368 |
| 42 | 273460560 |
| 43 | 317520 |
| 44 | 171360 |
| 45 | 0 |
| 46 | 1 |
| 47 | 2547 |
| 48 | 3786836 |
| 49 | 1246334388 |
[0,1,0,1,2,0,1,3,6,0,1,11,20,30,0,1,29,268,138, 192,0,1,93,2324,17658,1488,1560,0,1,268,28318, 414138,1696920,20400,15120,0,1,842,315196, 28493946,134764368,273460560,317520,171360,0,1, 2547,3786836,1246334388] |