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 | 0 |
| 2 | 11 |
| 3 | 201 |
| 4 | 2592 |
| 5 | 29916 |
| 6 | 328988 |
| 7 | 3550745 |
| 8 | 37432690 |
| 9 | 390065916 |
| 10 | 4034529147 |
| 11 | 41532029309 |
| 12 | 425608837164 |