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 | 1 |
1 | 2 |
2 | 8 |
3 | 40 |
4 | 228 |
5 | 1416 |
6 | 9312 |
7 | 63648 |
8 | 446760 |
9 | 3195728 |
10 | 23179840 |
11 | 169929280 |
12 | 1256234720 |
13 | 9350462400 |
14 | 69993150720 |
15 | 526455847680 |
16 | 3976132184160 |
17 | 30138433333440 |
18 | 229168000121600 |
19 | 1747455531216640 |
20 | 13358199405416320 |
21 | 102345801274115840 |
22 | 785740341422453760 |