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 | 20 |
2 | 8464 |
3 | 4050864 |
4 | 2116980800 |
5 | 1173644492800 |
6 | 678353946298560 |
7 | 404352269157205152 |
8 | 246796318508780847360 |
9 | 153477802845690943118400 |
10 | 96903346351876187722368000 |
11 | 61954834924471706682462940800 |
12 | 40029904663914104968204952365824 |
13 | 26096917229103772343967114415006304 |