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 | 212 |
| 3 | 3274 |
| 4 | 15113 |
| 5 | 236417 |
| 6 | 15975465 |
| 7 | 991017155 |
| 8 | 4006725713 |
| 9 | 4079348720699 |