cp's OEIS Frontend

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.

A166997 G.f.: C(x)^2 - S(x)^2 where C(x) = Sum_{n>=0} log(1 - 2^(2n)*x)^(2n)/(2n)! and S(x) = Sum_{n>=0} -log(1 - 2^(2n+1)*x)^(2n+1)/(2n+1)! are the g.f.s of A166995 and A166996, respectively.

Table of values

n a(n)
0 1
1 0
2 12
3 56
4 5404
5 171664
6 193729840
7 36639136064
8 919064160383600
9 937227332865348224
10 699214061851483321467008
11 3577364560049979516493456896
12 93123865010226899737836259608990464

List of values

[1, 0, 12, 56, 5404, 171664, 193729840, 36639136064, 919064160383600, 937227332865348224, 699214061851483321467008, 3577364560049979516493456896, 93123865010226899737836259608990464]