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 | 4 |
3 | 20 |
4 | 40 |
5 | 152 |
6 | 664 |
7 | 1760 |
8 | 5680 |
9 | 24752 |
10 | 138064 |
11 | 356480 |
12 | 1568320 |
13 | 5886752 |
14 | 32781664 |
15 | 266420000 |
16 | 726928960 |
17 | 3135277952 |
18 | 16299729664 |
19 | 81402739520 |
20 | 640678081600 |
21 | 7084434124352 |
22 | 18897678264064 |
23 | 92846198695040 |
24 | 464088929482240 |
25 | 3347512310365952 |