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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 6 |
| 3 | 3 |
| 4 | 15 |
| 5 | 30 |
| 6 | 10 |
| 7 | 5 |
| 8 | 35 |
| 9 | 70 |
| 10 | 210 |
| 11 | 105 |
| 12 | 21 |
| 13 | 42 |
| 14 | 14 |
| 15 | 7 |
| 16 | 77 |
| 17 | 154 |
| 18 | 462 |
| 19 | 231 |
| 20 | 1155 |
| 21 | 2310 |
| 22 | 770 |
| 23 | 385 |
| 24 | 55 |
| 25 | 110 |
| 26 | 330 |
| 27 | 165 |
| 28 | 33 |
| 29 | 66 |
| 30 | 22 |
| 31 | 11 |
| 32 | 143 |
| 33 | 286 |
| 34 | 858 |
| 35 | 429 |
| 36 | 2145 |
| 37 | 4290 |
| 38 | 1430 |
| 39 | 715 |
| 40 | 5005 |
| 41 | 10010 |
| 42 | 30030 |
| 43 | 15015 |
| 44 | 3003 |
| 45 | 6006 |
| 46 | 2002 |
| 47 | 1001 |
| 48 | 91 |
| 49 | 182 |
| 50 | 546 |
| 51 | 273 |
| 52 | 1365 |
| 53 | 2730 |
| 54 | 910 |
| 55 | 455 |
| 56 | 65 |
| 57 | 130 |
| 58 | 390 |
| 59 | 195 |
| 60 | 39 |
| 61 | 78 |
| 62 | 26 |
| 63 | 13 |
| 64 | 221 |
| 65 | 442 |
| 66 | 1326 |
| 67 | 663 |
| 68 | 3315 |
| 69 | 6630 |
| 70 | 2210 |
| 71 | 1105 |
[1,2,6,3,15,30,10,5,35,70,210,105,21,42,14,7,77, 154,462,231,1155,2310,770,385,55,110,330,165,33, 66,22,11,143,286,858,429,2145,4290,1430,715,5005, 10010,30030,15015,3003,6006,2002,1001,91,182,546, 273,1365,2730,910,455,65,130,390,195,39,78,26,13, 221,442,1326,663,3315,6630,2210,1105] |