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 | 1 |
| 2 | 23 |
| 3 | 529 |
| 4 | 1081 |
| 5 | 12167 |
| 6 | 24863 |
| 7 | 50807 |
| 8 | 279841 |
| 9 | 571849 |
| 10 | 1168561 |
| 11 | 2387929 |
| 12 | 2870377 |
| 13 | 6436343 |
| 14 | 7009273 |
| 15 | 13152527 |
| 16 | 15954479 |
| 17 | 26876903 |
| 18 | 54922367 |
| 19 | 66018671 |
| 20 | 112232663 |
| 21 | 134907719 |
| 22 | 148035889 |
| 23 | 161213279 |
| 24 | 302508121 |
| 25 | 329435831 |