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) |
---|---|
3 | 1 |
4 | 4 |
5 | 14 |
6 | 44 |
7 | 132 |
8 | 384 |
9 | 1096 |
10 | 3088 |
11 | 8624 |
12 | 23936 |
13 | 66144 |
14 | 182208 |
15 | 500800 |
16 | 1374208 |
17 | 3766400 |
18 | 10313984 |
19 | 28226304 |
20 | 77211648 |
21 | 211138048 |
22 | 577223680 |
23 | 1577772032 |
24 | 4312088576 |
25 | 11783915520 |
26 | 32200396800 |
27 | 87985401856 |
28 | 240405151744 |