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 | 5 |
| 3 | 7 |
| 4 | 9 |
| 5 | 11 |
| 6 | 13 |
| 7 | 23 |
| 8 | 721 |
| 9 | 979007 |
| 10 | 661211444787 |
| 11 | 622321538786143185105739 |
| 12 | 511768271877666618502328764212401495966764795565 |
| 13 | 209525411280522638000804396401925664136495425904830384693383280180439963265695525939102230139815 |