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 | 2 |
| 2 | 3 |
| 3 | 4 |
| 4 | 5 |
| 5 | 6 |
| 6 | 10 |
| 7 | 12 |
| 8 | 16 |
| 9 | 20 |
| 10 | 149 |
| 11 | 150 |
| 12 | 476 |
| 13 | 594 |
| 14 | 788 |
| 15 | 1574 |
| 16 | 1664 |
| 17 | 1691 |
| 18 | 6117 |
| 19 | 6242 |