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 | 11 |
| 2 | 211 |
| 3 | 511111 |
| 4 | 71111111 |
| 5 | 101111111111 |
| 6 | 161111111111111111 |
| 7 | 2011111111111111111111 |
| 8 | 6511111111111111111111111111111111111111111111111111111111111111111 |