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 | 12 |
| 3 | 114 |
| 4 | 1270 |
| 5 | 12518 |
| 6 | 125634 |
| 7 | 1257749 |
| 8 | 12570993 |
| 9 | 125716733 |
| 10 | 1256921422 |
| 11 | 12570417639 |