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 | -4 |
3 | 42 |
4 | 7296 |
5 | -7931976 |
6 | -45557382240 |
7 | 3064554175021200 |
8 | 801993619807364206080 |
9 | -2618439032548254776387771520 |
10 | -30580166025709706974876961026475520 |
11 | 4440597519115996836838709580481861376121600 |