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 | 2 |
| 2 | 4 |
| 3 | 8 |
| 4 | 42 |
| 5 | 84 |
| 6 | 2763 |
| 7 | 4032 |
| 8 | 8064 |
| 9 | 67314 |
| 10 | 86558 |
| 11 | 291483 |
| 12 | 2700063 |
| 13 | 2700000063 |
| 14 | 4039603962 |
| 15 | 46420566582 |
| 16 | 6739054689866 |