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 | 0 |
3 | 6 |
4 | 36 |
5 | 210 |
6 | 3870 |
7 | 70224 |
8 | 1122072 |
9 | 23086344 |
10 | 586910880 |
11 | 15469437456 |
12 | 441107126856 |
13 | 14206113541152 |
14 | 496333927370736 |
15 | 18463733657766144 |
16 | 739328759822848320 |
17 | 31759148433997889280 |
18 | 1447876893211813379520 |
19 | 69881726567495477445120 |