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 | 0 |
1 | 0 |
2 | 4 |
3 | 216 |
4 | 165888 |
5 | 604800000 |
6 | 48372940800000 |
7 | 43156963184025600000 |
8 | 1392410948543163924480000000 |
9 | 668916177911197542484208831692800000 |
10 | 8199617664717905359483850194944000000000000000 |
11 | 2401010998878767104110478543683244630474752000000000000000 |