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 | 5 |
| 2 | 5 |
| 3 | 5 |
| 4 | 5 |
| 5 | 13 |
| 6 | 283 |
| 7 | 283 |
| 8 | 1823 |
| 9 | 443119823 |
| 10 | 35332754383 |
| 11 | 57704757113 |
| 12 | 69478435945493 |
| 13 | 2235755385712423 |
| 14 | 5314285836920063 |
| 15 | 300677829503061013 |