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 | 13 |
| 2 | 559 |
| 3 | 4575 |
| 4 | 1589 |
| 5 | 162248 |
| 6 | 399579 |
| 7 | 3346228 |
| 8 | 82144203 |
| 9 | 24658601 |
| 10 | 22869046249 |
| 11 | 165431035708 |
| 12 | 368299898266 |
| 13 | 10541103245815 |
| 14 | 14793486898235 |
| 15 | 46970519777308 |