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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 6 |
| 5 | 10 |
| 6 | 15 |
| 7 | 35 |
| 8 | 70 |
| 9 | 1 |
| 10 | 210 |
| 11 | 462 |
| 12 | 66 |
| 13 | 715 |
| 14 | 3003 |
| 15 | 5005 |
| 16 | 1 |
| 17 | 24310 |
| 18 | 1 |
| 19 | 92378 |
| 20 | 125970 |
| 21 | 293930 |
| 22 | 646646 |
| 23 | 1352078 |
| 24 | 10626 |
| 25 | 53130 |
| 26 | 5311735 |
| 27 | 1 |
| 28 | 13123110 |
| 29 | 34597290 |
| 30 | 435 |
| 31 | 44352165 |
| 32 | 1 |
| 33 | 33 |
| 34 | 2203961430 |
| 35 | 6545 |
| 36 | 1 |
| 37 | 66045 |
| 38 | 33578000610 |
| 39 | 62359143990 |
| 40 | 91390 |
| 41 | 350343565 |
[1,1,2,3,6,10,15,35,70,1,210,462,66,715,3003,5005, 1,24310,1,92378,125970,293930,646646,1352078, 10626,53130,5311735,1,13123110,34597290,435, 44352165,1,33,2203961430,6545,1,66045,33578000610, 62359143990,91390,350343565] |