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 | 2 |
2 | 20 |
3 | 1120 |
4 | 30800 |
5 | 1121120 |
6 | 152472320 |
7 | 8277068800 |
8 | 523524601600 |
9 | 340290991040000 |
10 | 27631628472448000 |
11 | 2491870494969856000 |
12 | 741331472253532160000 |
13 | 80177849999112785920000 |
14 | 9392262428467497779200000 |
15 | 3554032102932101159649280000 |
16 | 480238587908700169197608960000 |