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) |
|---|---|
| 0 | 1 |
| 1 | 29 |
| 2 | 626 |
| 3 | 13869 |
| 4 | 347020 |
| 5 | 9952274 |
| 6 | 321541977 |
| 7 | 11416400590 |
| 8 | 435869304863 |
| 9 | 17605464402686 |
| 10 | 743624059688891 |
| 11 | 32572923621373010 |
| 12 | 1470621027107356485 |
| 13 | 68120063089374617281 |
| 14 | 3225635202844511176442 |
| 15 | 155695310201341829770911 |