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) |
|---|---|
| 0 | 4 |
| 1 | 169 |
| 2 | 1089 |
| 3 | 169 |
| 4 | 22801 |
| 5 | 22801 |
| 6 | 3600 |
| 7 | 1459264 |
| 8 | 3600 |
| 9 | 63001 |
| 10 | 53348416 |
| 11 | 1946309689 |
| 12 | 6098829025 |
| 13 | 1946309689 |
| 14 | 53348416 |
| 15 | 63001 |
| 16 | 572166400 |
| 17 | 51799939216 |
| 18 | 429256901329 |
| 19 | 429256901329 |
| 20 | 51799939216 |
| 21 | 572166400 |
| 22 | 1036324 |
| 23 | 1213839841536 |