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 | 711131719 |
| 2 | 4753596167 |
| 3 | 5359616771 |
| 4 | 6771737983 |
| 5 | 97101103107109 |
| 6 | 101103107109113 |
| 7 | 149151157163167 |
| 8 | 401409419421431 |
| 9 | 431433439443449 |
| 10 | 479487491499503 |
| 11 | 487491499503509 |
| 12 | 757761769773787 |
| 13 | 827829839853857 |