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 | 0 |
2 | 2 |
3 | 6 |
4 | 60 |
5 | 720 |
6 | 8400 |
7 | 161280 |
8 | 2857680 |
9 | 66528000 |
10 | 1650227040 |
11 | 45984153600 |
12 | 1430926136640 |
13 | 47843446210560 |
14 | 1760106348000000 |
15 | 69273962466508800 |
16 | 2936107841835168000 |
17 | 132818888849994547200 |
18 | 6387603066932383296000 |
19 | 325931634111283200000000 |
20 | 17558641895241269299276800 |