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 | 21 |
| 2 | 441 |
| 3 | 5917 |
| 4 | 95299 |
| 5 | 1507355 |
| 6 | 23471595 |
| 7 | 368714705 |
| 8 | 5782895827 |
| 9 | 90654802423 |
| 10 | 1421716453961 |
| 11 | 22294076155075 |
| 12 | 349592218477051 |
| 13 | 5482034564500123 |
| 14 | 85964497396238357 |
| 15 | 1348020724029962565 |
| 16 | 21138507798707438087 |