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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 0 |
| 3 | 1 |
| 4 | 2 |
| 5 | 0 |
| 6 | 1 |
| 7 | 6 |
| 8 | 16 |
| 9 | 0 |
| 10 | 1 |
| 11 | 12 |
| 12 | 174 |
| 13 | 192 |
| 14 | 0 |
| 15 | 1 |
| 16 | 20 |
| 17 | 690 |
| 18 | 7020 |
| 19 | 2816 |
| 20 | 0 |
| 21 | 1 |
| 22 | 30 |
| 23 | 1876 |
| 24 | 52808 |
| 25 | 325590 |
| 26 | 46592 |
| 27 | 0 |
| 28 | 1 |
| 29 | 42 |
| 30 | 4140 |
| 31 | 229680 |
| 32 | 4558410 |
| 33 | 16290708 |
| 34 | 835584 |
| 35 | 0 |
| 36 | 1 |
| 37 | 56 |
| 38 | 7986 |
| 39 | 738192 |
| 40 | 31497284 |
| 41 | 420421056 |
| 42 | 854630476 |
| 43 | 15876096 |
| 44 | 0 |
[1,1,0,1,2,0,1,6,16,0,1,12,174,192,0,1,20,690, 7020,2816,0,1,30,1876,52808,325590,46592,0,1,42, 4140,229680,4558410,16290708,835584,0,1,56,7986, 738192,31497284,420421056,854630476,15876096,0] |