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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 12 |
| 5 | 10 |
| 6 | 60 |
| 7 | 35 |
| 8 | 280 |
| 9 | 126 |
| 10 | 1260 |
| 11 | 462 |
| 12 | 5544 |
| 13 | 1716 |
| 14 | 24024 |
| 15 | 6435 |
| 16 | 102960 |
| 17 | 24310 |
| 18 | 437580 |
| 19 | 92378 |
| 20 | 1847560 |
| 21 | 352716 |
| 22 | 7759752 |
| 23 | 1352078 |
| 24 | 32449872 |
| 25 | 5200300 |
| 26 | 135207800 |
| 27 | 20058300 |
| 28 | 561632400 |
| 29 | 77558760 |
| 30 | 2326762800 |
| 31 | 300540195 |
| 32 | 9617286240 |
| 33 | 1166803110 |
| 34 | 39671305740 |
[0,1,2,3,12,10,60,35,280,126,1260,462,5544,1716, 24024,6435,102960,24310,437580,92378,1847560, 352716,7759752,1352078,32449872,5200300,135207800, 20058300,561632400,77558760,2326762800,300540195, 9617286240,1166803110,39671305740] |