This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 8 |
| 4 | 64 |
| 5 | 512 |
| 6 | 4096 |
| 7 | 125000 |
| 8 | 1000000 |
| 9 | 8000000 |
| 10 | 40707584 |
| 11 | 325660672 |
| 12 | 2605285376 |
| 13 | 13858588808 |
| 14 | 110868710464 |
| 15 | 886949683712 |
| 16 | 4748408986112 |
| 17 | 37987271888896 |
| 18 | 303898175111168 |
| 19 | 1628455122125000 |
| 20 | 13027640977000000 |