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 | 8 |
| 4 | 16 |
| 5 | 31 |
| 6 | 60 |
| 7 | 116 |
| 8 | 225 |
| 9 | 436 |
| 10 | 845 |
| 11 | 1637 |
| 12 | 3172 |
| 13 | 6146 |
| 14 | 11909 |
| 15 | 23075 |
| 16 | 44711 |
| 17 | 86633 |
| 18 | 167863 |
| 19 | 325256 |
| 20 | 630226 |
| 21 | 1221144 |
| 22 | 2366125 |
| 23 | 4584673 |
| 24 | 8883398 |
| 25 | 17212733 |
| 26 | 33351899 |
| 27 | 64623621 |
| 28 | 125216632 |
| 29 | 242623433 |
| 30 | 470114310 |
| 31 | 910907331 |
| 32 | 1765000872 |
| 33 | 3419917668 |
| 34 | 6626533192 |