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.

A272913 a(n) = 3*2^(2*n-1)*(n-1)*n^3*binomial(2*n,n)^2, a closed form for a triple binomial sum involving absolute values.

Table of values

n a(n)
0 0
1 0
2 6912
3 2073600
4 361267200
5 48771072000
6 5665247723520
7 595732271726592
8 58357447026278400
9 5420989989833932800
10 483204292920999936000
11 41671538221507034480640
12 3497929581885972295974912
13 287077554068924493987840000
14 23115688495680026711162880000

List of values

[0, 0, 6912, 2073600, 361267200, 48771072000, 5665247723520, 595732271726592, 58357447026278400, 5420989989833932800, 483204292920999936000, 41671538221507034480640, 3497929581885972295974912, 287077554068924493987840000, 23115688495680026711162880000]