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 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 2 |
| 5 | 4 |
| 6 | 7 |
| 7 | 9 |
| 8 | 16 |
| 9 | 19 |
| 10 | 34 |
| 11 | 39 |
| 12 | 55 |
| 13 | 75 |
| 14 | 113 |
| 15 | 153 |
| 16 | 199 |
| 17 | 245 |
| 18 | 318 |
| 19 | 426 |
| 20 | 499 |
| 21 | 733 |
| 22 | 866 |
| 23 | 1110 |
| 24 | 1347 |
| 25 | 1794 |
| 26 | 2099 |
| 27 | 2667 |
| 28 | 3559 |
| 29 | 4087 |
| 30 | 5219 |