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 | 1 |
| 1 | 1 |
| 2 | 4 |
| 3 | 25 |
| 4 | 1 |
| 5 | 256 |
| 6 | 169 |
| 7 | 1225 |
| 8 | 5476 |
| 9 | 961 |
| 10 | 64009 |
| 11 | 25600 |
| 12 | 358801 |
| 13 | 1164241 |
| 14 | 515524 |
| 15 | 15642025 |
| 16 | 3243601 |
| 17 | 101284096 |
| 18 | 239228089 |
| 19 | 216825625 |
| 20 | 3736387876 |
| 21 | 287336401 |
| 22 | 27697946329 |
| 23 | 47210598400 |