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) |
|---|---|
| 0 | 2 |
| 1 | 64037 |
| 2 | 6634003367 |
| 3 | 666334000333667 |
| 4 | 66663334000033336667 |
| 5 | 6666633334000003333366667 |
| 6 | 666666333334000000333333666667 |
| 7 | 66666663333334000000033333336666667 |