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 | 1 |
| 1 | 1 |
| 2 | 6 |
| 3 | 132 |
| 4 | 2369 |
| 5 | 33344 |
| 6 | 451206 |
| 7 | 5850115 |
| 8 | 81459922 |
| 9 | 1144259389 |
| 10 | 15946621499 |