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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 3 |
| 5 | 15 |
| 6 | 10 |
| 7 | 70 |
| 8 | 35 |
| 9 | 35 |
| 10 | 14 |
| 11 | 154 |
| 12 | 231 |
| 13 | 3003 |
| 14 | 858 |
| 15 | 1430 |
| 16 | 715 |
| 17 | 12155 |
| 18 | 24310 |
| 19 | 461890 |
| 20 | 46189 |
| 21 | 969969 |
| 22 | 176358 |
| 23 | 4056234 |
| 24 | 676039 |
| 25 | 676039 |
| 26 | 104006 |
| 27 | 104006 |
| 28 | 7429 |
| 29 | 215441 |
| 30 | 6463230 |
| 31 | 200360130 |
| 32 | 100180065 |
| 33 | 367326905 |
| 34 | 43214930 |
| 35 | 60500902 |
| 36 | 30250451 |
| 37 | 1119266687 |
| 38 | 117817546 |
| 39 | 4594884294 |
| 40 | 11487210735 |
[1,2,6,3,15,10,70,35,35,14,154,231,3003,858,1430, 715,12155,24310,461890,46189,969969,176358, 4056234,676039,676039,104006,104006,7429,215441, 6463230,200360130,100180065,367326905,43214930, 60500902,30250451,1119266687,117817546,4594884294, 11487210735] |