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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 1 |
| 5 | 3 |
| 6 | 10 |
| 7 | 1 |
| 8 | 4 |
| 9 | 10 |
| 10 | 35 |
| 11 | 1 |
| 12 | 5 |
| 13 | 15 |
| 14 | 35 |
| 15 | 126 |
| 16 | 1 |
| 17 | 6 |
| 18 | 21 |
| 19 | 56 |
| 20 | 126 |
| 21 | 462 |
| 22 | 1 |
| 23 | 7 |
| 24 | 28 |
| 25 | 84 |
| 26 | 210 |
| 27 | 462 |
| 28 | 1716 |
| 29 | 1 |
| 30 | 8 |
| 31 | 36 |
| 32 | 120 |
| 33 | 330 |
| 34 | 792 |
| 35 | 1716 |
| 36 | 6435 |
| 37 | 1 |
| 38 | 9 |
| 39 | 45 |
| 40 | 165 |
| 41 | 495 |
| 42 | 1287 |
| 43 | 3003 |
| 44 | 6435 |
| 45 | 24310 |
| 46 | 1 |
| 47 | 10 |
| 48 | 55 |
| 49 | 220 |
| 50 | 715 |
| 51 | 2002 |
| 52 | 5005 |
| 53 | 11440 |
| 54 | 24310 |
| 55 | 92378 |
[1,1,3,1,3,10,1,4,10,35,1,5,15,35,126,1,6,21,56, 126,462,1,7,28,84,210,462,1716,1,8,36,120,330,792, 1716,6435,1,9,45,165,495,1287,3003,6435,24310,1, 10,55,220,715,2002,5005,11440,24310,92378] |