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 | 1 |
2 | 6 |
3 | 24 |
4 | 168 |
5 | 1260 |
6 | 11760 |
7 | 126000 |
8 | 1545600 |
9 | 21304080 |
10 | 326350080 |
11 | 5497873920 |
12 | 101048048640 |
13 | 2011924474560 |
14 | 43139969832960 |
15 | 991088998099200 |
16 | 24286975237324800 |
17 | 632358338278867200 |
18 | 17433184834127462400 |
19 | 507307459608530380800 |
20 | 15539683835941532467200 |