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 | 30 |
2 | 990 |
3 | 33660 |
4 | 1161270 |
5 | 40412196 |
6 | 1414426860 |
7 | 49707001080 |
8 | 1752171788070 |
9 | 61910069845140 |
10 | 2191616472517956 |
11 | 77702765843818440 |
12 | 2758448187455554620 |
13 | 98031004815728171880 |
14 | 3487102885588044971160 |