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 | 12 |
| 2 | 132 |
| 3 | 1284 |
| 4 | 12756 |
| 5 | 126612 |
| 6 | 1265604 |
| 7 | 12652932 |
| 8 | 126616404 |
| 9 | 1267690812 |
| 10 | 12697464132 |
| 11 | 127218134748 |
| 12 | 1274923451364 |
| 13 | 12779117065740 |
| 14 | 128110554439020 |