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 | 2 |
| 3 | 7 |
| 4 | 15 |
| 5 | 52 |
| 6 | 102 |
| 7 | 296 |
| 8 | 371 |
| 9 | 455 |
| 10 | 929 |
| 11 | 1853 |
| 12 | 2034 |
| 13 | 4517 |
| 14 | 4797 |
| 15 | 5829 |
| 16 | 6146 |
| 17 | 6948 |
| 18 | 17577 |
| 19 | 18915 |
| 20 | 60349 |
| 21 | 78369 |
| 22 | 85171 |
| 23 | 123788 |
| 24 | 128596 |
| 25 | 415355 |
| 26 | 906771 |
| 27 | 1308771 |
| 28 | 3329668 |