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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 70 |
| 3 | 34650 |
| 4 | 63063000 |
| 5 | 302857024681 |
| 6 | 3171644273043481 |
| 7 | 63767771149790231020 |
| 8 | 2246276459710030995597000 |
| 9 | 129398739548198780715411006000 |
| 10 | 11551019408580550906836084615390361 |
| 11 | 1530266028377887010801240993038984544961 |
| 12 | 290384391726747532382877490399579938116889720 |
[1,1,70,34650,63063000,302857024681, 3171644273043481,63767771149790231020, 2246276459710030995597000, 129398739548198780715411006000, 11551019408580550906836084615390361, 1530266028377887010801240993038984544961, 290384391726747532382877490399579938116889720] |