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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 0 |
| 4 | 1 |
| 5 | 4 |
| 6 | 0 |
| 7 | 1 |
| 8 | 24 |
| 9 | 45 |
| 10 | 0 |
| 11 | 1 |
| 12 | 112 |
| 13 | 2268 |
| 14 | 816 |
| 15 | 0 |
| 16 | 1 |
| 17 | 480 |
| 18 | 76221 |
| 19 | 461056 |
| 20 | 20225 |
| 21 | 0 |
| 22 | 1 |
| 23 | 1984 |
| 24 | 2245320 |
| 25 | 152978176 |
| 26 | 160977375 |
| 27 | 632700 |
| 28 | 0 |
| 29 | 1 |
| 30 | 8064 |
| 31 | 62858025 |
| 32 | 43083161600 |
| 33 | 673315202500 |
| 34 | 85624508376 |
| 35 | 23836540 |
| 36 | 0 |
| 37 | 1 |
| 38 | 32512 |
| 39 | 1723364748 |
| 40 | 11442561314816 |
| 41 | 2331513459843750 |
| 42 | 5508710472669120 |
| 43 | 64363893844726 |
| 44 | 1048592640 |
| 45 | 0 |
[1,1,0,1,4,0,1,24,45,0,1,112,2268,816,0,1,480, 76221,461056,20225,0,1,1984,2245320,152978176, 160977375,632700,0,1,8064,62858025,43083161600, 673315202500,85624508376,23836540,0,1,32512, 1723364748,11442561314816,2331513459843750, 5508710472669120,64363893844726,1048592640,0] |