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 | -3 |
2 | 70 |
3 | -11160 |
4 | 12850368 |
5 | -111842970624 |
6 | 7558738517524480 |
7 | -4024873276683363287040 |
8 | 17013427111087951089139449856 |
9 | -573105858480900876266937950612226048 |
10 | 154142404695090288939416498797330749299097600 |