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 | 13 |
| 2 | 182 |
| 3 | 312 |
| 4 | 2314 |
| 5 | 14235 |
| 6 | 125346 |
| 7 | 1234675 |
| 8 | 12348765 |
| 9 | 123456879 |
| 10 | 1023457968 |