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 | 613200 |
| 1 | 100123 |
| 2 | 100012 |
| 3 | 10 |
| 4 | 1023 |
| 5 | 100 |
| 6 | 0 |
| 7 | 10234 |
| 8 | 10000123 |
| 9 | 10000000000002 |