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 | 15 |
| 1 | 16 |
| 2 | 495 |
| 3 | 511 |
| 4 | 15825 |
| 5 | 16336 |
| 6 | 505905 |
| 7 | 522241 |
| 8 | 16173135 |
| 9 | 16695376 |
| 10 | 517034415 |
| 11 | 533729791 |
| 12 | 16528928145 |
| 13 | 17062657936 |
| 14 | 528408666225 |
| 15 | 545471324161 |
| 16 | 16892548391055 |
| 17 | 17438019715216 |
| 18 | 540033139847535 |