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) |
---|---|
1 | 4 |
2 | 16 |
3 | 144 |
4 | 960 |
5 | 12880 |
6 | 62208 |
7 | 1087632 |
8 | 7027200 |
9 | 85098816 |
10 | 691398400 |
11 | 10374307328 |
12 | 49985372160 |
13 | 1061265441600 |
14 | 7064952935040 |
15 | 90426613939200 |
16 | 708867057254400 |
17 | 11892871258806912 |
18 | 65078340559220736 |
19 | 1287559798913990448 |
20 | 8819554320783360000 |
21 | 111715065087913437696 |