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 | 3 |
| 3 | 7 |
| 4 | 14 |
| 5 | 29 |
| 6 | 57 |
| 7 | 113 |
| 8 | 223 |
| 9 | 438 |
| 10 | 862 |
| 11 | 1695 |
| 12 | 3333 |
| 13 | 6552 |
| 14 | 12882 |
| 15 | 25326 |
| 16 | 49791 |
| 17 | 97887 |
| 18 | 192440 |
| 19 | 378328 |
| 20 | 743774 |
| 21 | 1462223 |
| 22 | 2874655 |
| 23 | 5651422 |
| 24 | 11110404 |
| 25 | 21842481 |
| 26 | 42941187 |
| 27 | 84420150 |
| 28 | 165965646 |
| 29 | 326279870 |
| 30 | 641449337 |
| 31 | 1261056193 |
| 32 | 2479171198 |