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 | 6 |
| 2 | 66 |
| 3 | 666 |
| 4 | 2926 |
| 5 | 29962999696266 |
| 6 | 226966926929226 |
| 7 | 9996922966699222296 |
| 8 | 296292269222296622226 |
| 9 | 22266696966226666966622226 |
| 10 | 266669269626696962299266226222926 |