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 | 4 |
| 1 | 10 |
| 2 | 25 |
| 3 | 58 |
| 4 | 125 |
| 5 | 250 |
| 6 | 505 |
| 7 | 1020 |
| 8 | 2075 |
| 9 | 4227 |
| 10 | 8597 |
| 11 | 17213 |