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 | 0 |
1 | 1 |
2 | 6 |
3 | 150 |
4 | 7560 |
5 | 650160 |
6 | 84823200 |
7 | 15617281680 |
8 | 3855823171200 |
9 | 1229340262550400 |
10 | 491641405006752000 |
11 | 241000527467642342400 |
12 | 142107676844443620710400 |
13 | 99236357585615999548800000 |