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 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 3 |
| 6 | 6 |
| 7 | 11 |
| 8 | 22 |
| 9 | 46 |
| 10 | 96 |
| 11 | 205 |
| 12 | 442 |
| 13 | 976 |
| 14 | 2146 |
| 15 | 4789 |
| 16 | 10719 |
| 17 | 24202 |
| 18 | 54841 |
| 19 | 124967 |
| 20 | 285724 |
| 21 | 656011 |
| 22 | 1510929 |
| 23 | 3491151 |
| 24 | 8088692 |
| 25 | 18790084 |