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 | 0 |
| 1 | 2 |
| 2 | 2 |
| 3 | 4 |
| 4 | 8 |
| 5 | 12 |
| 6 | 26 |
| 7 | 36 |
| 8 | 98 |
| 9 | 124 |
| 10 | 274 |
| 11 | 512 |
| 12 | 1018 |
| 13 | 1916 |
| 14 | 3812 |
| 15 | 7772 |
| 16 | 14822 |
| 17 | 29368 |
| 18 | 58478 |
| 19 | 114300 |
| 20 | 225166 |
| 21 | 441724 |
| 22 | 876238 |
| 23 | 1717748 |
| 24 | 3406884 |