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 | 52 |
4 | 200 |
5 | 2896 |
6 | 15392 |
7 | 169792 |
8 | 1078400 |
9 | 10306816 |
10 | 72376832 |
11 | 639480832 |
12 | 4753049600 |
13 | 40201179136 |
14 | 308548739072 |
15 | 2546754076672 |
16 | 19903847628800 |
17 | 162051890937856 |
18 | 1279488468058112 |
19 | 10337467701133312 |
20 | 82090381869056000 |