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 | 9 |
| 5 | 11 |
| 6 | 18 |
| 7 | 19 |
| 8 | 27 |
| 9 | 28 |
| 10 | 46 |
| 11 | 50 |
| 12 | 53 |
| 13 | 80 |
| 14 | 155 |
| 15 | 203 |
| 16 | 280 |
| 17 | 451 |
| 18 | 4963 |
| 19 | 6167 |
| 20 | 9687 |
| 21 | 10083 |
| 22 | 31450 |