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 | 0 |
2 | 2 |
3 | 6 |
4 | 84 |
5 | 860 |
6 | 14430 |
7 | 257082 |
8 | 5678456 |
9 | 140241096 |
10 | 3952791450 |
11 | 123539438990 |
12 | 4266378769092 |
13 | 160943793753756 |
14 | 6592371152535350 |
15 | 291260465060881890 |
16 | 13809548247503299440 |
17 | 699362685890810753552 |
18 | 37679514498664685654706 |