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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 6 |
| 4 | 3 |
| 5 | 15 |
| 6 | 5 |
| 7 | 35 |
| 8 | 70 |
| 9 | 70 |
| 10 | 7 |
| 11 | 77 |
| 12 | 231 |
| 13 | 3003 |
| 14 | 858 |
| 15 | 1430 |
| 16 | 1430 |
| 17 | 24310 |
| 18 | 12155 |
| 19 | 230945 |
| 20 | 46189 |
| 21 | 230945 |
| 22 | 176358 |
| 23 | 4056234 |
| 24 | 676039 |
| 25 | 676039 |
| 26 | 104006 |
| 27 | 312018 |
| 28 | 44574 |
| 29 | 1292646 |
| 30 | 1077205 |
| 31 | 33393355 |
| 32 | 66786710 |
| 33 | 2203961430 |
| 34 | 64822395 |
| 35 | 90751353 |
| 36 | 90751353 |
| 37 | 3357800061 |
| 38 | 353452638 |
| 39 | 1531628098 |
| 40 | 3829070245 |
| 41 | 156991880045 |
[1,1,2,6,3,15,5,35,70,70,7,77,231,3003,858,1430, 1430,24310,12155,230945,46189,230945,176358, 4056234,676039,676039,104006,312018,44574,1292646, 1077205,33393355,66786710,2203961430,64822395, 90751353,90751353,3357800061,353452638,1531628098, 3829070245,156991880045] |