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 | 101 |
| 2 | 787 |
| 3 | 34543 |
| 4 | 7654567 |
| 5 | 345676543 |
| 6 | 34567876543 |