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 | 4 |
| 4 | 100 |
| 5 | 400 |
| 6 | 6724 |
| 7 | 8281 |
| 8 | 10000 |
| 9 | 26896 |
| 10 | 532900 |
| 11 | 672400 |
| 12 | 2131600 |
| 13 | 43059844 |
| 14 | 44129449 |
| 15 | 45212176 |
| 16 | 53290000 |
| 17 | 54479161 |
| 18 | 55681444 |
| 19 | 172239376 |
| 20 | 186104164 |
| 21 | 186595600 |
| 22 | 203946961 |
| 23 | 2921402500 |
| 24 | 3486902500 |
| 25 | 3583219600 |