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.

A188457 G.f.: 1 = Sum_{n>=0} a(n)*x^n/(1 + 3^n*x)^(n+1).

Table of values

n a(n)
0 1
1 1
2 5
3 109
4 9449
5 3068281
6 3586048685
7 14668583277349
8 205716978569685329
9 9737002299093315531121
10 1536239893108209683958428885
11 799846636937376803320381186364509
12 1362900713950636674946135205457794784569

List of values

[1, 1, 5, 109, 9449, 3068281, 3586048685, 14668583277349, 205716978569685329, 9737002299093315531121, 1536239893108209683958428885, 799846636937376803320381186364509, 1362900713950636674946135205457794784569]