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 | 120 |
1 | -3120 |
2 | 1657560 |
3 | -462870720 |
4 | 94034430600 |
5 | -34709926327440 |
6 | 7736751469771080 |
7 | -2418878906762872320 |
8 | 634745166256592831640 |
9 | -175970074271706846159600 |
10 | 49274372699370917797432920 |