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 | 2 |
3 | 8 |
4 | 50 |
5 | 412 |
6 | 4120 |
7 | 47840 |
8 | 628130 |
9 | 9164600 |
10 | 146786980 |
11 | 2557718352 |
12 | 48147082520 |
13 | 973612557504 |
14 | 21050077835440 |
15 | 484637221115520 |
16 | 11839623684281890 |
17 | 305949448095405252 |
18 | 8339153054042801704 |