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 | 64 |
| 2 | 49 |
| 3 | 169 |
| 4 | 576 |
| 5 | 2025 |
| 6 | 7056 |
| 7 | 24964 |
| 8 | 87616 |
| 9 | 310249 |
| 10 | 1092025 |
| 11 | 3865156 |
| 12 | 13623481 |
| 13 | 48191364 |
| 14 | 169989444 |
| 15 | 601034256 |
| 16 | 2121063025 |
| 17 | 7496962225 |
| 18 | 26464782400 |
| 19 | 93519144481 |
| 20 | 330192741376 |
| 21 | 1166628971236 |
| 22 | 4119600902400 |
| 23 | 14553774833481 |