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 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 8 |
| 5 | 13 |
| 6 | 26 |
| 7 | 46 |
| 8 | 92 |
| 9 | 166 |
| 10 | 332 |
| 11 | 610 |
| 12 | 1220 |
| 13 | 2269 |
| 14 | 4538 |
| 15 | 8518 |
| 16 | 17036 |
| 17 | 32206 |
| 18 | 64412 |
| 19 | 122464 |
| 20 | 244928 |
| 21 | 467842 |
| 22 | 935684 |
| 23 | 1794196 |
| 24 | 3588392 |
| 25 | 6903352 |
| 26 | 13806704 |
| 27 | 26635774 |
| 28 | 53271548 |
| 29 | 103020253 |
| 30 | 206040506 |
| 31 | 399300166 |
| 32 | 798600332 |