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 | 208012 |
3 | 260363981732400 |
4 | 6692030708288364864188400 |
5 | 10232120200642411474243152429724152000 |
6 | 86658540597515379404676466333427087630920602972939 |