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 | 3 |
4 | 80 |
5 | 570 |
6 | 12744 |
7 | 198660 |
8 | 4969152 |
9 | 119968128 |
10 | 3607836480 |
11 | 115031711520 |
12 | 4163170478400 |
13 | 162622297300320 |
14 | 6952158785424384 |
15 | 319741032356928000 |
16 | 15818989359665802240 |
17 | 835755271882288128000 |
18 | 47015148988105365288960 |
19 | 2804276310235518168161280 |