| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 1 |
| 3 | 4 |
| 4 | 0 |
| 5 | 1 |
| 6 | 0 |
| 7 | 12 |
| 8 | 0 |
| 9 | 1 |
| 10 | 80 |
| 11 | 0 |
| 12 | 24 |
| 13 | 0 |
| 14 | 1 |
| 15 | 0 |
| 16 | 400 |
| 17 | 0 |
| 18 | 40 |
| 19 | 0 |
| 20 | 1 |
| 21 | 3904 |
| 22 | 0 |
| 23 | 1200 |
| 24 | 0 |
| 25 | 60 |
| 26 | 0 |
| 27 | 1 |
| 28 | 0 |
| 29 | 27328 |
| 30 | 0 |
| 31 | 2800 |
| 32 | 0 |
| 33 | 84 |
| 34 | 0 |
| 35 | 1 |
| 36 | 354560 |
| 37 | 0 |
| 38 | 109312 |
| 39 | 0 |
| 40 | 5600 |
| 41 | 0 |
| 42 | 112 |
| 43 | 0 |
| 44 | 1 |
| 45 | 0 |
| 46 | 3191040 |
| 47 | 0 |
| 48 | 327936 |
| 49 | 0 |
| 50 | 10080 |
| 51 | 0 |
| 52 | 144 |
| 53 | 0 |
| 54 | 1 |
| 55 | 51733504 |
| 56 | 0 |
| 57 | 15955200 |
| 58 | 0 |
| 59 | 819840 |
| 60 | 0 |
| 61 | 16800 |
| 62 | 0 |
| 63 | 180 |
| 64 | 0 |
| 65 | 1 |
[1,0,1,4,0,1,0,12,0,1,80,0,24,0,1,0,400,0,40,0,1, 3904,0,1200,0,60,0,1,0,27328,0,2800,0,84,0,1, 354560,0,109312,0,5600,0,112,0,1,0,3191040,0, 327936,0,10080,0,144,0,1,51733504,0,15955200,0, 819840,0,16800,0,180,0,1] |