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 | 3 |
| 3 | 4 |
| 4 | 15 |
| 5 | 26 |
| 6 | 2573 |
| 7 | 17226 |
| 8 | 19786 |
| 9 | 22083 |
| 10 | 58133 |
| 11 | 67693 |
| 12 | 223657 |
| 13 | 376460 |
| 14 | 464713 |
| 15 | 497068 |
| 16 | 2621204 |
| 17 | 4553376 |
| 18 | 6000136 |
| 19 | 7671158 |
| 20 | 13975944 |
| 21 | 14074903 |
| 22 | 52731198 |
| 23 | 82594577 |