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 | 4 |
| 3 | 11 |
| 4 | 32 |
| 5 | 85 |
| 6 | 260 |
| 7 | 735 |
| 8 | 2224 |
| 9 | 6585 |
| 10 | 19780 |
| 11 | 59059 |
| 12 | 177472 |
| 13 | 531453 |
| 14 | 1595076 |
| 15 | 4783175 |
| 16 | 14351168 |
| 17 | 43046737 |
| 18 | 129147252 |
| 19 | 387420507 |
| 20 | 1162281440 |
| 21 | 3486785925 |
| 22 | 10460412292 |
| 23 | 31381059631 |
| 24 | 94143360944 |
| 25 | 282429536825 |
| 26 | 847289140932 |