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 | 1 |
1 | 12 |
2 | 143 |
3 | 648000 |
4 | 12964479 |
5 | 1721036800000 |
6 | 2077805148460987 |
7 | 5041895218133760000000 |
8 | 14154229032767142723739127 |
9 | 51951524164830314976613655528865792 |