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 | -120 |
2 | -21859200 |
3 | -131273353728000 |
4 | -6725237593471119360000 |
5 | -1653993087378574357912780800000 |
6 | -1405832822961504544259161592168448000000 |
7 | -3334380558587161259470375739654344298987520000000 |
8 | -18982929854690021819576777610944622891185796965990400000000 |