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 | 13 |
| 2 | 169 |
| 3 | 234 |
| 4 | 324 |
| 5 | 900 |
| 6 | 2500 |
| 7 | 6900 |
| 8 | 19044 |
| 9 | 52992 |
| 10 | 147456 |
| 11 | 407808 |
| 12 | 1127844 |
| 13 | 3135024 |
| 14 | 8714304 |
| 15 | 24123744 |
| 16 | 66781584 |
| 17 | 185488056 |
| 18 | 515199204 |
| 19 | 1427114052 |
| 20 | 3953139876 |
| 21 | 10974405204 |
| 22 | 30466306116 |
| 23 | 84427202016 |
| 24 | 233961820416 |
| 25 | 649289325600 |