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.

A181238 Number of (4*n)X4 binary matrices with all row sums equal and all column sums equal.

Table of values

n a(n)
1 140
2 49772
3 33235358
4 27896484332
5 26012734507190
6 25785064658274014
7 26631749414632177802
8 28342597507242978860012
9 30862541359435652055581702
10 34221243248277031078812700022
11 38507504930060734566868274154362

List of values

[140, 49772, 33235358, 27896484332, 26012734507190, 25785064658274014, 26631749414632177802, 28342597507242978860012, 30862541359435652055581702, 34221243248277031078812700022, 38507504930060734566868274154362]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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