The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 18 |
| 3 | 8121 |
| 4 | 75143314 |
| 5 | 12641135924840 |
| 6 | 36876057665515782388 |
| 7 | 1819829483946334379705083199 |
| 8 | 1496946629440335290077827171482478552 |
| 9 | 20328210229221517747154723779733726877327901902 |
| 10 | 4527425732825492268524878479039840102127714838348518156649 |
[1,1,18,8121,75143314,12641135924840, 36876057665515782388,1819829483946334379705083199, 1496946629440335290077827171482478552, 20328210229221517747154723779733726877327901902, 45274257328254922685248784790398401021277148383485\ 18156649] |