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 | 29 |
| 4 | 82 |
| 5 | 207 |
| 6 | 492 |
| 7 | 1129 |
| 8 | 2534 |
| 9 | 5603 |
| 10 | 12256 |
| 11 | 26589 |
| 12 | 57306 |
| 13 | 122839 |
| 14 | 262100 |
| 15 | 557009 |
| 16 | 1179598 |
| 17 | 2490315 |
| 18 | 5242824 |
| 19 | 11009989 |
| 20 | 23068610 |
| 21 | 48234431 |
| 22 | 100663228 |
| 23 | 209715129 |
| 24 | 436207542 |
| 25 | 905969587 |