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 | 3141592653 |
| 2 | 4392366484 |
| 3 | 9526413073 |
| 4 | 7454969632 |
| 5 | 1459184231 |
| 6 | 3955267283 |