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 | 7 |
| 4 | 11 |
| 5 | 17 |
| 6 | 29 |
| 7 | 58 |
| 8 | 129 |
| 9 | 292 |
| 10 | 639 |
| 11 | 1333 |
| 12 | 2666 |
| 13 | 5188 |
| 14 | 9999 |
| 15 | 19388 |
| 16 | 38166 |
| 17 | 76332 |
| 18 | 154261 |
| 19 | 312703 |
| 20 | 632171 |
| 21 | 1271107 |
| 22 | 2542214 |
| 23 | 5066717 |
| 24 | 10087066 |
| 25 | 20099107 |
| 26 | 40123189 |
| 27 | 80246378 |
| 28 | 160689174 |
| 29 | 321892577 |
| 30 | 644617194 |
| 31 | 1290066428 |
| 32 | 2580132856 |