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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 1 |
| 4 | 3 |
| 5 | 6 |
| 6 | 1 |
| 7 | 4 |
| 8 | 18 |
| 9 | 10 |
| 10 | 1 |
| 11 | 5 |
| 12 | 40 |
| 13 | 55 |
| 14 | 15 |
| 15 | 1 |
| 16 | 6 |
| 17 | 75 |
| 18 | 200 |
| 19 | 126 |
| 20 | 21 |
| 21 | 1 |
| 22 | 7 |
| 23 | 126 |
| 24 | 560 |
| 25 | 700 |
| 26 | 252 |
| 27 | 28 |
| 28 | 1 |
| 29 | 8 |
| 30 | 196 |
| 31 | 1316 |
| 32 | 2850 |
| 33 | 1996 |
| 34 | 462 |
| 35 | 36 |
| 36 | 1 |
| 37 | 9 |
| 38 | 288 |
| 39 | 2730 |
| 40 | 9261 |
| 41 | 11376 |
| 42 | 5004 |
| 43 | 792 |
| 44 | 45 |
| 45 | 1 |
| 46 | 10 |
| 47 | 405 |
| 48 | 5160 |
| 49 | 25480 |
| 50 | 50127 |
| 51 | 38550 |
| 52 | 11440 |
| 53 | 1287 |
| 54 | 55 |
| 55 | 1 |
| 56 | 11 |
| 57 | 550 |
| 58 | 9075 |
| 59 | 61776 |
| 60 | 181027 |
| 61 | 225225 |
| 62 | 116160 |
| 63 | 24310 |
| 64 | 2002 |
| 65 | 66 |
| 66 | 1 |
[1,2,1,3,6,1,4,18,10,1,5,40,55,15,1,6,75,200,126, 21,1,7,126,560,700,252,28,1,8,196,1316,2850,1996, 462,36,1,9,288,2730,9261,11376,5004,792,45,1,10, 405,5160,25480,50127,38550,11440,1287,55,1,11,550, 9075,61776,181027,225225,116160,24310,2002,66,1] |