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.

A058528 Number of n X n (0,1) matrices with all column and row sums equal to 4.

Table of values

n a(n)
0 1
1 0
2 0
3 0
4 1
5 120
6 67950
7 68938800
8 116963796250
9 315031400802720
10 1289144584143523800
11 7722015017013984456000
12 65599839591251908982712750
13 769237071909157579108571190000
14 12163525741347497524178307740904300

List of values

[1, 0, 0, 0, 1, 120, 67950, 68938800, 116963796250, 315031400802720, 1289144584143523800, 7722015017013984456000, 65599839591251908982712750, 769237071909157579108571190000, 12163525741347497524178307740904300]

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

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