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 | 2 |
1 | 0 |
2 | 450 |
3 | 81920 |
4 | 2077650 |
5 | 22413312 |
6 | 148531250 |
7 | 716636160 |
8 | 2763575010 |
9 | 9017753600 |
10 | 25850353122 |
11 | 66816000000 |
12 | 158678718770 |
13 | 351151718400 |
14 | 731985584850 |
15 | 1449526034432 |
16 | 2745436781250 |
17 | 5000952545280 |
18 | 8800799033090 |
19 | 15019798118400 |
20 | 24938174692242 |
21 | 40392704000000 |