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 | 3 |
| 2 | 29 |
| 3 | 239 |
| 4 | 2371 |
| 5 | 235723 |
| 6 | 23571127 |
| 7 | 2357111357 |
| 8 | 235711131727 |
| 9 | 23571113171939 |
| 10 | 2357111317192343 |
| 11 | 235711131719232977 |
| 12 | 23571113171923293283 |
| 13 | 2357111317192329313801 |
| 14 | 235711131719232931374149 |
| 15 | 23571113171923293137414371 |
| 16 | 2357111317192329313741434781 |