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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 6 |
| 3 | 30 |
| 4 | 210 |
| 5 | 2730 |
| 6 | 39270 |
| 7 | 510510 |
| 8 | 23393370 |
| 9 | 363993630 |
| 10 | 64790866140 |
| 11 | 530514844860 |
| 12 | 126408523110870 |
| 13 | 3425113062060690 |
| 14 | 660393717163700520 |
| 15 | 26657280574571657010 |
| 16 | 3448055881024876471350 |
| 17 | 308480161111936386482910 |
[2,6,30,210,2730,39270,510510,23393370,363993630, 64790866140,530514844860,126408523110870, 3425113062060690,660393717163700520, 26657280574571657010,3448055881024876471350, 308480161111936386482910] |