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 | 1 |
2 | 945 |
3 | 1401400 |
4 | 2546168625 |
5 | 5194672859376 |
6 | 11423951396577720 |
7 | 26478825654361766400 |
8 | 63805953776276649848625 |
9 | 158421985022100255941485000 |
10 | 402789797982510165934296910320 |
11 | 1044048983553856888083223814102400 |
12 | 2749848597736878877579660426025283000 |