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 | 160 |
3 | -20800 |
4 | 6476800 |
5 | -3946624000 |
6 | 4161608704000 |
7 | -6974121256960000 |
8 | 17455222222028800000 |
9 | -62226770432344883200000 |
10 | 304379186781653598208000000 |
11 | -1982049657077223312916480000000 |
12 | 16758824127564135479341219840000000 |