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 | 3674160 |
3 | 43252003274489856000 |
4 | 7401196841564901869874093974498574336000000000 |
5 | 282870942277741856536180333107150328293127731985672134721536000000000000000 |