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 | 0 |
| 3 | 2 |
| 4 | 2 |
| 5 | 3 |
| 6 | 4 |
| 7 | 7 |
| 8 | 12 |
| 9 | 16 |
| 10 | 22 |
| 11 | 32 |
| 12 | 50 |
| 13 | 68 |
| 14 | 96 |
| 15 | 134 |
| 16 | 195 |
| 17 | 261 |
| 18 | 364 |
| 19 | 497 |
| 20 | 701 |
| 21 | 941 |
| 22 | 1288 |
| 23 | 1738 |