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 | 1 |
2 | 4 |
3 | 14 |
4 | 72 |
5 | 424 |
6 | 2960 |
7 | 23568 |
8 | 211456 |
9 | 2109056 |
10 | 23150592 |
11 | 277315840 |
12 | 3599704064 |
13 | 50331030528 |
14 | 754122723328 |
15 | 12054165272576 |
16 | 204743835156480 |
17 | 3682557441114112 |
18 | 69920454322356224 |
19 | 1397542619388248064 |
20 | 29331932133035081728 |
21 | 644973249444408197120 |