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 | 4 |
5 | 10 |
6 | 40 |
7 | 210 |
8 | 1904 |
9 | 15120 |
10 | 132600 |
11 | 1293600 |
12 | 14303520 |
13 | 171531360 |
14 | 2223464880 |
15 | 31023392400 |
16 | 464541960960 |
17 | 7424367350400 |
18 | 126124766476800 |
19 | 2269425252931200 |
20 | 43119553374460800 |
21 | 862673918061715200 |
22 | 18126931548822835200 |
23 | 399119899456951411200 |