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 | 2 |
| 1 | 83 |
| 2 | 6887 |
| 3 | 571538 |
| 4 | 47430767 |
| 5 | 3936182123 |
| 6 | 326655685442 |
| 7 | 27108485709563 |
| 8 | 2249677658208287 |
| 9 | 186696137145578258 |
| 10 | 15493529705424787127 |
| 11 | 1285776269413111753283 |
| 12 | 106703936831582850735362 |
| 13 | 8855140980751963499281763 |
| 14 | 734869997465581387589650967 |
| 15 | 60985354648662503206441748498 |