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 | 1023456789 |
| 2 | 3175462089 |
| 3 | 4680215379 |
| 4 | 5702631489 |
| 5 | 7351062489 |
| 6 | 7025869314 |