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 | 0 |
| 1 | 4 |
| 2 | 68 |
| 3 | 964 |
| 4 | 12836 |
| 5 | 165784 |
| 6 | 2103788 |
| 7 | 26396416 |
| 8 | 328621604 |
| 9 | 4068021916 |
| 10 | 50142879128 |