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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 2 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 18 |
| 10 | 0 |
| 11 | 0 |
| 12 | 2 |
| 13 | 12 |
| 14 | 84 |
| 15 | 0 |
| 16 | 0 |
| 17 | 0 |
| 18 | 114 |
| 19 | 264 |
| 20 | 260 |
| 21 | 0 |
| 22 | 0 |
| 23 | 2 |
| 24 | 180 |
| 25 | 2652 |
| 26 | 1920 |
| 27 | 630 |
| 28 | 0 |
| 29 | 0 |
| 30 | 0 |
| 31 | 858 |
| 32 | 16080 |
| 33 | 29660 |
| 34 | 8520 |
| 35 | 1302 |
| 36 | 0 |
| 37 | 0 |
| 38 | 2 |
| 39 | 1932 |
| 40 | 119844 |
| 41 | 367080 |
| 42 | 198030 |
| 43 | 28140 |
| 44 | 2408 |
| 45 | 0 |
| 46 | 0 |
| 47 | 0 |
| 48 | 7074 |
| 49 | 816984 |
| 50 | 4843460 |
| 51 | 4067280 |
| 52 | 932862 |
| 53 | 76272 |
| 54 | 4104 |
| 55 | 0 |
| 56 | 0 |
| 57 | 2 |
| 58 | 18660 |
| 59 | 5784492 |
| 60 | 62682480 |
| 61 | 85847910 |
| 62 | 28576380 |
| 63 | 3440024 |
| 64 | 179424 |
| 65 | 6570 |
| 66 | 0 |
[0,0,0,0,2,0,0,0,18,0,0,2,12,84,0,0,0,114,264,260, 0,0,2,180,2652,1920,630,0,0,0,858,16080,29660, 8520,1302,0,0,2,1932,119844,367080,198030,28140, 2408,0,0,0,7074,816984,4843460,4067280,932862, 76272,4104,0,0,2,18660,5784492,62682480,85847910, 28576380,3440024,179424,6570,0] |