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 | 2 |
| 4 | 4 |
| 5 | 10 |
| 6 | 21 |
| 7 | 49 |
| 8 | 104 |
| 9 | 227 |
| 10 | 468 |
| 11 | 976 |
| 12 | 1978 |
| 13 | 4030 |
| 14 | 8095 |
| 15 | 16313 |
| 16 | 32656 |
| 17 | 65503 |
| 18 | 130986 |
| 19 | 262252 |
| 20 | 524330 |
| 21 | 1049054 |
| 22 | 2097549 |
| 23 | 4195633 |
| 24 | 8389840 |