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 | 1 |
| 2 | 405 |
| 3 | 5949 |
| 4 | 73136 |
| 5 | 989947 |
| 6 | 12867295 |
| 7 | 170792866 |
| 8 | 2268088205 |
| 9 | 30263321279 |
| 10 | 403675695558 |
| 11 | 5385766437559 |
| 12 | 71840547896222 |
| 13 | 958386976026868 |
| 14 | 12786233698435986 |
| 15 | 170595408884312447 |
| 16 | 2276122067209739706 |