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 | 5 |
| 4 | 12 |
| 5 | 26 |
| 6 | 57 |
| 7 | 119 |
| 8 | 250 |
| 9 | 512 |
| 10 | 1050 |
| 11 | 2126 |
| 12 | 4309 |
| 13 | 8675 |
| 14 | 17469 |
| 15 | 35057 |
| 16 | 70364 |
| 17 | 140978 |
| 18 | 282468 |
| 19 | 565448 |
| 20 | 1131946 |
| 21 | 2264942 |
| 22 | 4532010 |
| 23 | 9066146 |
| 24 | 18136601 |
| 25 | 36277511 |
| 26 | 72563697 |
| 27 | 145136069 |
| 28 | 290289607 |
| 29 | 580596683 |
| 30 | 1161228423 |
| 31 | 2322491903 |
| 32 | 4645054170 |
| 33 | 9290178704 |
| 34 | 18580498386 |