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 | 0 |
1 | 1 |
2 | 2 |
3 | 6 |
4 | 32 |
5 | 220 |
6 | 1592 |
7 | 11944 |
8 | 96000 |
9 | 847120 |
10 | 8209952 |
11 | 86020704 |
12 | 958326272 |
13 | 11243157952 |
14 | 138464594816 |
15 | 1789358629504 |
16 | 24250275913728 |
17 | 344002396594432 |
18 | 5092763802452480 |
19 | 78443316497892864 |
20 | 1253887341918199808 |
21 | 20761127890765634560 |