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.

A192623 G.f. satisfies: A(x) = Product_{n>=0} (1 + x^(n+1)*A(x)^(2*n))/(1 - x^(n+1)*A(x)^(2*n)).

Table of values

n a(n)
0 1
1 2
2 4
3 16
4 70
5 336
6 1720
7 9152
8 50140
9 280882
10 1601496
11 9263424
12 54224312
13 320611152
14 1912003536
15 11487287872
16 69463274022
17 422440713680
18 2582081184572
19 15853795192704
20 97736576247976
21 604744065493936
22 3754311394271208
23 23377930236777152

List of values

[1, 2, 4, 16, 70, 336, 1720, 9152, 50140, 280882, 1601496, 9263424, 54224312, 320611152, 1912003536, 11487287872, 69463274022, 422440713680, 2582081184572, 15853795192704, 97736576247976, 604744065493936, 3754311394271208, 23377930236777152]