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 | 61 |
| 3 | 797 |
| 4 | 6490 |
| 5 | 32744 |
| 6 | 146441 |
| 7 | 492277 |
| 8 | 1521123 |
| 9 | 4105795 |
| 10 | 10194558 |
| 11 | 22922408 |
| 12 | 49594408 |
| 13 | 98935110 |
| 14 | 190221734 |
| 15 | 350417949 |
| 16 | 621178227 |
| 17 | 1058404994 |
| 18 | 1764873413 |
| 19 | 2845696865 |
| 20 | 4506618651 |
| 21 | 6966717779 |
| 22 | 10552756376 |
| 23 | 15670141644 |
| 24 | 22984055065 |
| 25 | 33094853060 |
| 26 | 47016605050 |
| 27 | 65934960254 |
| 28 | 91414399149 |