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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 12 |
| 6 | 5 |
| 7 | 60 |
| 8 | 35 |
| 9 | 280 |
| 10 | 63 |
| 11 | 2520 |
| 12 | 77 |
| 13 | 27720 |
| 14 | 1287 |
| 15 | 8008 |
| 16 | 6435 |
| 17 | 720720 |
| 18 | 2431 |
| 19 | 12252240 |
| 20 | 46189 |
| 21 | 3695120 |
| 22 | 440895 |
| 23 | 232792560 |
| 24 | 96577 |
| 25 | 1070845776 |
| 26 | 3900225 |
| 27 | 2974571600 |
| 28 | 5014575 |
| 29 | 80313433200 |
| 30 | 215441 |
| 31 | 2329089562800 |
| 32 | 31556720475 |
[1,1,2,3,12,5,60,35,280,63,2520,77,27720,1287, 8008,6435,720720,2431,12252240,46189,3695120, 440895,232792560,96577,1070845776,3900225, 2974571600,5014575,80313433200,215441, 2329089562800,31556720475] |