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 | 1332 |
| 4 | 13452 |
| 5 | 134892 |
| 6 | 1353732 |
| 7 | 13536612 |
| 8 | 135457932 |
| 9 | 1352852292 |
| 10 | 13517235732 |
| 11 | 134908128732 |
| 12 | 1346796414252 |
| 13 | 13435850843172 |