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 | 1 |
| 2 | 14 |
| 3 | 141 |
| 4 | 1415 |
| 5 | 14159 |
| 6 | 141592 |
| 7 | 1415926 |
| 8 | 14159265 |
| 9 | 141592653 |
| 10 | 1415926535 |
| 11 | 14159265358 |
| 12 | 141592653589 |
| 13 | 1415926535897 |
| 14 | 14159265358979 |
| 15 | 141592653589793 |
| 16 | 1415926535897932 |
| 17 | 14159265358979323 |
| 18 | 141592653589793238 |