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 | 0 |
2 | 2 |
3 | 4 |
4 | 6 |
5 | 180 |
6 | 1820 |
7 | 3588 |
8 | 9100 |
9 | 226153980 |
10 | 15140424455100 |
11 | 183567298683461940 |
12 | 9562401173878027020 |
13 | 42094239791738433660 |
14 | 1238789998647218582160 |
15 | 189073995951839020880499780706260 |