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 | 8 |
| 3 | 64 |
| 4 | 8000 |
| 5 | 64000 |
| 6 | 8000000 |
| 7 | 8242408 |
| 8 | 64000000 |
| 9 | 6048464248 |
| 10 | 6068404224 |
| 11 | 6880682808 |
| 12 | 8000000000 |
| 13 | 8024024008 |
| 14 | 8242408000 |
| 15 | 64000000000 |
| 16 | 82426462208 |
| 17 | 6048464248000 |
| 18 | 6068404224000 |
| 19 | 6880682808000 |
| 20 | 8000000000000 |
| 21 | 8002400240008 |