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 | 1 |
2 | 5 |
3 | 105 |
4 | 8820 |
5 | 2910600 |
6 | 3745942200 |
7 | 18748440711000 |
8 | 364619674947528000 |
9 | 27558684271884061296000 |
10 | 8100324068034882136733280000 |
11 | 9267305355220395466643896716480000 |
12 | 41308086890359390753018505224037952000000 |