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 | 2 |
| 3 | 34 |
| 4 | 578 |
| 5 | 4658 |
| 6 | 9826 |
| 7 | 79186 |
| 8 | 167042 |
| 9 | 638146 |
| 10 | 1346162 |
| 11 | 2839714 |
| 12 | 5109826 |
| 13 | 10848482 |
| 14 | 22884754 |
| 15 | 48275138 |
| 16 | 86867042 |
| 17 | 87426002 |
| 18 | 184424194 |
| 19 | 389040818 |
| 20 | 459469778 |
| 21 | 700046162 |
| 22 | 820677346 |
| 23 | 1476739714 |
| 24 | 1486242034 |
| 25 | 3135211298 |
| 26 | 5605479122 |
| 27 | 6613693906 |
| 28 | 7810986226 |
| 29 | 11900784754 |
| 30 | 11977362274 |