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 | 23571113 |
| 2 | 357111317 |
| 3 | 5711131719 |
| 4 | 71113171923 |
| 5 | 111317192329 |
| 6 | 131719232931 |
| 7 | 171923293137 |
| 8 | 192329313741 |
| 9 | 232931374143 |
| 10 | 293137414347 |
| 11 | 313741434753 |
| 12 | 374143475359 |
| 13 | 414347535961 |
| 14 | 434753596167 |
| 15 | 475359616771 |
| 16 | 535961677173 |