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 | 8 |
| 3 | 41 |
| 4 | 207 |
| 5 | 967 |
| 6 | 4370 |
| 7 | 19138 |
| 8 | 81805 |
| 9 | 343363 |
| 10 | 1421530 |
| 11 | 5820904 |
| 12 | 23626234 |
| 13 | 95220378 |
| 14 | 381577586 |
| 15 | 1521967986 |
| 16 | 6047272980 |
| 17 | 23951790860 |
| 18 | 94618944122 |
| 19 | 372969633775 |
| 20 | 1467518524851 |
| 21 | 5765549295661 |
| 22 | 22623246705372 |
| 23 | 88678543148354 |