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.

A172401 G.f.: 1/(1-x) = Sum_{n>=0} a(n)*x^n/(1+x)^(2^n-1).

Table of values

n a(n)
0 1
1 1
2 2
3 6
4 32
5 332
6 6928
7 292334
8 24875760
9 4254812880
10 1459549877168
11 1002824206109916
12 1379081986798078000
13 3794489305535947254732
14 20884859614892223147785056
15 229923086002576723635638394810

List of values

[1, 1, 2, 6, 32, 332, 6928, 292334, 24875760, 4254812880, 1459549877168, 1002824206109916, 1379081986798078000, 3794489305535947254732, 20884859614892223147785056, 229923086002576723635638394810]