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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 1 |
| 6 | 1 |
| 7 | 3 |
| 8 | 6 |
| 9 | 4 |
| 10 | 1 |
| 11 | 4 |
| 12 | 15 |
| 13 | 56 |
| 14 | 70 |
| 15 | 1 |
| 16 | 5 |
| 17 | 28 |
| 18 | 220 |
| 19 | 1820 |
| 20 | 4368 |
| 21 | 1 |
| 22 | 6 |
| 23 | 45 |
| 24 | 560 |
| 25 | 10626 |
| 26 | 201376 |
| 27 | 906192 |
| 28 | 1 |
| 29 | 7 |
| 30 | 66 |
| 31 | 1140 |
| 32 | 35960 |
| 33 | 1712304 |
| 34 | 74974368 |
| 35 | 621216192 |
| 36 | 1 |
| 37 | 8 |
| 38 | 91 |
| 39 | 2024 |
| 40 | 91390 |
| 41 | 7624512 |
| 42 | 927048304 |
| 43 | 94525795200 |
| 44 | 1429702652400 |
| 45 | 1 |
| 46 | 9 |
| 47 | 120 |
| 48 | 3276 |
| 49 | 194580 |
| 50 | 24040016 |
| 51 | 5423611200 |
| 52 | 1708566412608 |
| 53 | 409663695276000 |
| 54 | 11288510714272000 |
| 55 | 1 |
| 56 | 10 |
| 57 | 153 |
| 58 | 4960 |
| 59 | 367290 |
| 60 | 61124064 |
| 61 | 21193254160 |
| 62 | 13161885792000 |
| 63 | 10895665708319184 |
| 64 | 6208116950265950720 |
| 65 | 312268282598377321216 |
[1,1,1,1,2,1,1,3,6,4,1,4,15,56,70,1,5,28,220,1820, 4368,1,6,45,560,10626,201376,906192,1,7,66,1140, 35960,1712304,74974368,621216192,1,8,91,2024, 91390,7624512,927048304,94525795200,1429702652400, 1,9,120,3276,194580,24040016,5423611200, 1708566412608,409663695276000,11288510714272000,1, 10,153,4960,367290,61124064,21193254160, 13161885792000,10895665708319184, 6208116950265950720,312268282598377321216] |