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 | 0 |
4 | 24 |
5 | 0 |
6 | 0 |
7 | 2520 |
8 | 201600 |
9 | 0 |
10 | 1209600 |
11 | 259459200 |
12 | 16765056000 |
13 | 1556755200 |
14 | 639307468800 |
15 | 100037089152000 |
16 | 5967179676057600 |
17 | 2815858805760000 |
18 | 784290778951680000 |
19 | 107737010595422208000 |
20 | 6175610876944244736000 |
21 | 8813187524619878400000 |
22 | 2070195245189633802240000 |
23 | 264886226510800191897600000 |