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| n | a(n) |
|---|---|
| 3 | 1 |
| 4 | 0 |
| 5 | 4 |
| 6 | 0 |
| 7 | 4 |
| 8 | 10 |
| 9 | 0 |
| 10 | 4 |
| 11 | 24 |
| 12 | 20 |
| 13 | 0 |
| 14 | 4 |
| 15 | 42 |
| 16 | 84 |
| 17 | 35 |
| 18 | 0 |
| 19 | 4 |
| 20 | 64 |
| 21 | 224 |
| 22 | 224 |
| 23 | 56 |
| 24 | 0 |
| 25 | 4 |
| 26 | 90 |
| 27 | 480 |
| 28 | 840 |
| 29 | 504 |
| 30 | 84 |
| 31 | 0 |
| 32 | 4 |
| 33 | 120 |
| 34 | 900 |
| 35 | 2400 |
| 36 | 2520 |
| 37 | 1008 |
| 38 | 120 |
| 39 | 0 |
| 40 | 4 |
| 41 | 154 |
| 42 | 1540 |
| 43 | 5775 |
| 44 | 9240 |
| 45 | 6468 |
| 46 | 1848 |
| 47 | 165 |
| 48 | 0 |
| 49 | 4 |
| 50 | 192 |
| 51 | 2464 |
| 52 | 12320 |
| 53 | 27720 |
| 54 | 29568 |
| 55 | 14784 |
| 56 | 3168 |
| 57 | 220 |
| 58 | 0 |
| 59 | 4 |
| 60 | 234 |
| 61 | 3744 |
| 62 | 24024 |
| 63 | 72072 |
| 64 | 108108 |
| 65 | 82368 |
| 66 | 30888 |
| 67 | 5148 |
[1,0,4,0,4,10,0,4,24,20,0,4,42,84,35,0,4,64,224, 224,56,0,4,90,480,840,504,84,0,4,120,900,2400, 2520,1008,120,0,4,154,1540,5775,9240,6468,1848, 165,0,4,192,2464,12320,27720,29568,14784,3168,220, 0,4,234,3744,24024,72072,108108,82368,30888,5148] |