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 | 2 |
3 | 6 |
4 | 30 |
5 | 150 |
6 | 900 |
7 | 7020 |
8 | 58680 |
9 | 528120 |
10 | 5644080 |
11 | 63510480 |
12 | 769610160 |
13 | 10483933680 |
14 | 150733677600 |
15 | 2272680828000 |
16 | 37752297264000 |
17 | 653710445308800 |
18 | 11839468023187200 |
19 | 231623795388268800 |
20 | 4723930089495302400 |
21 | 99779582243860358400 |
22 | 2249431677071465356800 |