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) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 9 |
| 4 | 19 |
| 5 | 43 |
| 6 | 91 |
| 7 | 202 |
| 8 | 433 |
| 9 | 952 |
| 10 | 2055 |
| 11 | 4494 |
| 12 | 9737 |
| 13 | 21236 |
| 14 | 46099 |
| 15 | 100403 |
| 16 | 218164 |
| 17 | 474833 |
| 18 | 1032256 |
| 19 | 2245929 |
| 20 | 4883690 |
| 21 | 10623848 |
| 22 | 23103985 |
| 23 | 50255443 |
| 24 | 109298635 |
| 25 | 237734446 |
| 26 | 517055409 |
| 27 | 1124617945 |
| 28 | 2446001258 |
| 29 | 5320100761 |
| 30 | 11571106298 |
| 31 | 25167245524 |
| 32 | 54738437517 |