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 | 3 |
| 3 | 4 |
| 4 | 6 |
| 5 | 9 |
| 6 | 15 |
| 7 | 27 |
| 8 | 50 |
| 9 | 95 |
| 10 | 185 |
| 11 | 365 |
| 12 | 724 |
| 13 | 1441 |
| 14 | 2873 |
| 15 | 5735 |
| 16 | 11458 |
| 17 | 22902 |
| 18 | 45789 |
| 19 | 91561 |
| 20 | 183102 |
| 21 | 366180 |
| 22 | 732331 |
| 23 | 1464626 |
| 24 | 2929209 |
| 25 | 5858367 |
| 26 | 11716674 |
| 27 | 23433277 |
| 28 | 46866473 |
| 29 | 93732852 |
| 30 | 187465596 |
| 31 | 374931067 |
| 32 | 749861989 |
| 33 | 1499723808 |
| 34 | 2999447418 |