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 | 4 |
| 4 | 7 |
| 5 | 18 |
| 6 | 19 |
| 7 | 23 |
| 8 | 24 |
| 9 | 34 |
| 10 | 41 |
| 11 | 56 |
| 12 | 64 |
| 13 | 84 |
| 14 | 149 |
| 15 | 272 |
| 16 | 755 |
| 17 | 1272 |
| 18 | 2398 |
| 19 | 2686 |
| 20 | 4800 |
| 21 | 5198 |
| 22 | 6217 |
| 23 | 8737 |
| 24 | 12388 |
| 25 | 12391 |
| 26 | 19702 |
| 27 | 42404 |