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 | -4 |
2 | 104 |
3 | -37632 |
4 | 166534720 |
5 | -9109541173248 |
6 | 6487005386806124544 |
7 | -62637995710787181892993024 |
8 | 8428730138560436521519921925857280 |
9 | -16103390694987849639716307556519680725483520 |