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 | 60 |
6 | 240 |
7 | 1260 |
8 | 209664 |
9 | 2056320 |
10 | 20476800 |
11 | 221205600 |
12 | 19370292480 |
13 | 406935809280 |
14 | 7376151444480 |
15 | 131868581644800 |
16 | 8376837844193280 |
17 | 282378273124147200 |
18 | 7891890567682867200 |
19 | 207283550601631795200 |
20 | 11520967360247698636800 |