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 | 1 |
3 | 0 |
4 | 6 |
5 | 24 |
6 | 90 |
7 | 504 |
8 | 7560 |
9 | 18144 |
10 | 485352 |
11 | 4626720 |
12 | 32033232 |
13 | 516559680 |
14 | 9142044912 |
15 | 64700161344 |
16 | 1804378343040 |
17 | 29722011830784 |
18 | 308081755013760 |
19 | 8202581858225664 |
20 | 184073277074529024 |
21 | 2067986628774743040 |
22 | 75069447974837132544 |
23 | 1673053361596502645760 |