| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 1 |
| 3 | 6 |
| 4 | 3 |
| 5 | 1 |
| 6 | 30 |
| 7 | 15 |
| 8 | 5 |
| 9 | 1 |
| 10 | 210 |
| 11 | 105 |
| 12 | 35 |
| 13 | 7 |
| 14 | 1 |
| 15 | 2310 |
| 16 | 1155 |
| 17 | 385 |
| 18 | 77 |
| 19 | 11 |
| 20 | 1 |
| 21 | 30030 |
| 22 | 15015 |
| 23 | 5005 |
| 24 | 1001 |
| 25 | 143 |
| 26 | 13 |
| 27 | 1 |
| 28 | 510510 |
| 29 | 255255 |
| 30 | 85085 |
| 31 | 17017 |
| 32 | 2431 |
| 33 | 221 |
| 34 | 17 |
| 35 | 1 |
| 36 | 9699690 |
| 37 | 4849845 |
| 38 | 1616615 |
| 39 | 323323 |
| 40 | 46189 |
| 41 | 4199 |
| 42 | 323 |
| 43 | 19 |
| 44 | 1 |
| 45 | 223092870 |
| 46 | 111546435 |
| 47 | 37182145 |
| 48 | 7436429 |
| 49 | 1062347 |
| 50 | 96577 |
| 51 | 7429 |
| 52 | 437 |
| 53 | 23 |
| 54 | 1 |
[1,2,1,6,3,1,30,15,5,1,210,105,35,7,1,2310,1155, 385,77,11,1,30030,15015,5005,1001,143,13,1,510510, 255255,85085,17017,2431,221,17,1,9699690,4849845, 1616615,323323,46189,4199,323,19,1,223092870, 111546435,37182145,7436429,1062347,96577,7429,437, 23,1] |