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 | 4 |
| 2 | 6 |
| 3 | 7 |
| 4 | 11 |
| 5 | 12 |
| 6 | 20 |
| 7 | 25 |
| 8 | 45 |
| 9 | 113 |
| 10 | 193 |
| 11 | 1214 |
| 12 | 1272 |
| 13 | 2435 |
| 14 | 4007 |
| 15 | 12258 |
| 16 | 12771 |
| 17 | 14166 |
| 18 | 27368 |
| 19 | 29184 |