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 | 10 |
| 3 | 30 |
| 4 | 3458 |
| 5 | 29526 |
| 6 | 5437705 |
| 7 | 91604415 |
| 8 | 1190857395 |
| 9 | 26535163830 |
| 10 | 344957129790 |