The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 81 |
| 2 | 3213 |
| 3 | 40000 |
| 4 | 493695 |
| 5 | 8231161 |
| 6 | 143424652 |
| 7 | 2217939025 |
| 8 | 34022084475 |
| 9 | 540272041024 |
| 10 | 8624998783485 |
| 11 | 135974699750761 |
| 12 | 2140797614249280 |
| 13 | 33837345338388601 |
| 14 | 535135681749071815 |
| 15 | 8451720496022804100 |
[81,3213,40000,493695,8231161,143424652, 2217939025,34022084475,540272041024,8624998783485, 135974699750761,2140797614249280, 33837345338388601,535135681749071815, 8451720496022804100] |