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 | 2 |
| 1 | 0 |
| 2 | 121 |
| 3 | 2299 |
| 4 | 6061 |
| 5 | 43681 |
| 6 | 66671 |
| 7 | 33659659 |
| 8 | 187891 |
| 9 | 1266749 |
| 10 | 8067191 |
| 11 | 639533521 |
| 12 | 2066801 |