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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 30 |
| 4 | 586 |
| 5 | 17430 |
| 6 | 696744 |
| 7 | 34892228 |
| 8 | 2095250576 |
| 9 | 146470011822 |
| 10 | 11669877667640 |
| 11 | 1043022527852272 |
| 12 | 103294254944725680 |
| 13 | 11223660850862809960 |
| 14 | 1327297414140637610776 |
| 15 | 169690627501555713200460 |
| 16 | 23320015259500560303564736 |
| 17 | 3428111061331035575475494598 |
| 18 | 536769111685159965192282250632 |
| 19 | 89187403511916331132476542213808 |
[1,3,30,586,17430,696744,34892228,2095250576, 146470011822,11669877667640,1043022527852272, 103294254944725680,11223660850862809960, 1327297414140637610776,169690627501555713200460, 23320015259500560303564736, 3428111061331035575475494598, 536769111685159965192282250632, 89187403511916331132476542213808] |