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 | 235711 |
| 2 | 3571113 |
| 3 | 57111317 |
| 4 | 711131719 |
| 5 | 1113171923 |
| 6 | 1317192329 |
| 7 | 1719232931 |
| 8 | 1923293137 |
| 9 | 2329313741 |
| 10 | 2931374143 |
| 11 | 3137414347 |
| 12 | 3741434753 |
| 13 | 4143475359 |
| 14 | 4347535961 |
| 15 | 4753596167 |
| 16 | 5359616771 |
| 17 | 5961677173 |
| 18 | 6167717379 |
| 19 | 6771737983 |