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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 0 |
| 4 | 3 |
| 5 | 0 |
| 6 | 0 |
| 7 | 6 |
| 8 | 3 |
| 9 | 0 |
| 10 | 0 |
| 11 | 10 |
| 12 | 15 |
| 13 | 1 |
| 14 | 0 |
| 15 | 0 |
| 16 | 15 |
| 17 | 45 |
| 18 | 20 |
| 19 | 0 |
| 20 | 0 |
| 21 | 0 |
| 22 | 21 |
| 23 | 105 |
| 24 | 120 |
| 25 | 15 |
| 26 | 0 |
| 27 | 0 |
| 28 | 0 |
| 29 | 28 |
| 30 | 210 |
| 31 | 455 |
| 32 | 210 |
| 33 | 6 |
| 34 | 0 |
| 35 | 0 |
| 36 | 0 |
| 37 | 36 |
| 38 | 378 |
| 39 | 1330 |
| 40 | 1365 |
| 41 | 252 |
| 42 | 1 |
| 43 | 0 |
| 44 | 0 |
| 45 | 0 |
| 46 | 45 |
| 47 | 630 |
| 48 | 3276 |
| 49 | 5985 |
| 50 | 3003 |
| 51 | 210 |
| 52 | 0 |
| 53 | 0 |
| 54 | 0 |
| 55 | 0 |
| 56 | 55 |
| 57 | 990 |
| 58 | 7140 |
| 59 | 20475 |
| 60 | 20349 |
| 61 | 5005 |
| 62 | 120 |
| 63 | 0 |
| 64 | 0 |
| 65 | 0 |
| 66 | 0 |
| 67 | 66 |
| 68 | 1485 |
| 69 | 14190 |
| 70 | 58905 |
| 71 | 98280 |
| 72 | 54264 |
| 73 | 6435 |
| 74 | 45 |
| 75 | 0 |
| 76 | 0 |
| 77 | 0 |
| 78 | 0 |
[0,1,0,3,0,0,6,3,0,0,10,15,1,0,0,15,45,20,0,0,0, 21,105,120,15,0,0,0,28,210,455,210,6,0,0,0,36,378, 1330,1365,252,1,0,0,0,45,630,3276,5985,3003,210,0, 0,0,0,55,990,7140,20475,20349,5005,120,0,0,0,0,66, 1485,14190,58905,98280,54264,6435,45,0,0,0,0] |