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 | 24 |
5 | 60 |
6 | 1560 |
7 | 20370 |
8 | 161616 |
9 | 2601144 |
10 | 53827920 |
11 | 829605150 |
12 | 14894289960 |
13 | 360575394036 |
14 | 8234733389064 |
15 | 188800085076330 |
16 | 5145737430116640 |
17 | 148419618327231600 |
18 | 4278452209330445856 |
19 | 134018446273097264694 |
20 | 4529883358179857555640 |