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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 6 |
| 4 | 30 |
| 5 | 15 |
| 6 | 378 |
| 7 | 28 |
| 8 | 1080 |
| 9 | 270 |
| 10 | 2475 |
| 11 | 66 |
| 12 | 294840 |
| 13 | 91 |
| 14 | 8820 |
| 15 | 10800 |
| 16 | 146880 |
| 17 | 153 |
| 18 | 2908710 |
| 19 | 190 |
| 20 | 5197500 |
| 21 | 38808 |
| 22 | 50094 |
| 23 | 276 |
| 24 | 3184272000 |
| 25 | 4875 |
| 26 | 95823 |
| 27 | 102060 |
| 28 | 35809200 |
| 29 | 435 |
| 30 | 17401230000 |
| 31 | 496 |
| 32 | 77552640 |
| 33 | 222156 |
| 34 | 273105 |
| 35 | 264600 |
| 36 | 1511016670800 |
| 37 | 703 |
| 38 | 422370 |
| 39 | 425880 |
[1,3,6,30,15,378,28,1080,270,2475,66,294840,91, 8820,10800,146880,153,2908710,190,5197500,38808, 50094,276,3184272000,4875,95823,102060,35809200, 435,17401230000,496,77552640,222156,273105,264600, 1511016670800,703,422370,425880] |