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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 30 |
| 2 | 2310 |
| 3 | 204204 |
| 4 | 19122246 |
| 5 | 1848483780 |
| 6 | 182327718300 |
| 7 | 18236779032600 |
| 8 | 1842826521244230 |
| 9 | 187679234340049620 |
| 10 | 19232182592635611060 |
| 11 | 1980665038436368775400 |
| 12 | 204826599735691440534300 |
| 13 | 21255328931341321610645544 |
| 14 | 2212241139727064219063537016 |
[1,30,2310,204204,19122246,1848483780, 182327718300,18236779032600,1842826521244230, 187679234340049620,19232182592635611060, 1980665038436368775400,204826599735691440534300, 21255328931341321610645544, 2212241139727064219063537016] |