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 | 5 |
| 5 | 7 |
| 6 | 14 |
| 7 | 19 |
| 8 | 46 |
| 9 | 48 |
| 10 | 62 |
| 11 | 67 |
| 12 | 74 |
| 13 | 81 |
| 14 | 89 |
| 15 | 589 |
| 16 | 2090 |
| 17 | 2299 |
| 18 | 7742 |
| 19 | 1925975 |
| 20 | 1989191 |
| 21 | 2008551 |
| 22 | 4371904 |
| 23 | 6487918 |