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 | 5040 |
2 | 681080400 |
3 | 182509367040000 |
4 | 66475579247327250000 |
5 | 28837919555681211870935040 |
6 | 14007180988362844601443040716800 |
7 | 7363615666157189603982585462030336000 |
8 | 4104167472585675600759440022842715359250000 |
9 | 2392741010223442438553822446842770682716580000000 |