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 | 3 |
| 4 | 13 |
| 5 | 14 |
| 6 | 19 |
| 7 | 20 |
| 8 | 23 |
| 9 | 38 |
| 10 | 1124 |
| 11 | 7592 |
| 12 | 11755 |
| 13 | 12155 |
| 14 | 12915 |
| 15 | 14172 |
| 16 | 15500 |
| 17 | 20255 |
| 18 | 28388 |
| 19 | 184650 |