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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 0 |
| 3 | 1 |
| 4 | 3 |
| 5 | 0 |
| 6 | 1 |
| 7 | 0 |
| 8 | 12 |
| 9 | 0 |
| 10 | 1 |
| 11 | 5 |
| 12 | 0 |
| 13 | 30 |
| 14 | 0 |
| 15 | 1 |
| 16 | 0 |
| 17 | 120 |
| 18 | 0 |
| 19 | 60 |
| 20 | 0 |
| 21 | 1 |
| 22 | 7 |
| 23 | 0 |
| 24 | 735 |
| 25 | 0 |
| 26 | 105 |
| 27 | 0 |
| 28 | 1 |
| 29 | 0 |
| 30 | 896 |
| 31 | 0 |
| 32 | 2800 |
| 33 | 0 |
| 34 | 168 |
| 35 | 0 |
| 36 | 1 |
| 37 | 9 |
| 38 | 0 |
| 39 | 15372 |
| 40 | 0 |
| 41 | 8190 |
| 42 | 0 |
| 43 | 252 |
| 44 | 0 |
| 45 | 1 |
| 46 | 0 |
| 47 | 5760 |
| 48 | 0 |
| 49 | 114240 |
| 50 | 0 |
| 51 | 20160 |
| 52 | 0 |
| 53 | 360 |
| 54 | 0 |
| 55 | 1 |
| 56 | 11 |
| 57 | 0 |
| 58 | 270765 |
| 59 | 0 |
| 60 | 556710 |
| 61 | 0 |
| 62 | 43890 |
| 63 | 0 |
| 64 | 495 |
| 65 | 0 |
| 66 | 1 |
| 67 | 0 |
| 68 | 33792 |
| 69 | 0 |
| 70 | 4118400 |
| 71 | 0 |
| 72 | 2084544 |
| 73 | 0 |
| 74 | 87120 |
| 75 | 0 |
| 76 | 660 |
| 77 | 0 |
| 78 | 1 |
[1,0,1,3,0,1,0,12,0,1,5,0,30,0,1,0,120,0,60,0,1,7, 0,735,0,105,0,1,0,896,0,2800,0,168,0,1,9,0,15372, 0,8190,0,252,0,1,0,5760,0,114240,0,20160,0,360,0, 1,11,0,270765,0,556710,0,43890,0,495,0,1,0,33792, 0,4118400,0,2084544,0,87120,0,660,0,1] |