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) |
---|---|
1 | 2 |
2 | -48 |
3 | 40320 |
4 | -159667200 |
5 | 1743565824000 |
6 | -40548366802944000 |
7 | 1723467782592331776000 |
8 | -120987438337981690675200000 |
9 | 13052124847901464790040576000000 |
10 | -2050227771108362089219573678080000000 |
11 | 449688758403823707201064412255354880000000 |