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A202739 Number of nX5 0..1 arrays with row sums equal and column sums unequal to adjacent columns 1

%I #5 Mar 31 2012 12:36:51

%S 2,54,638,6870,75302,827502,8870150,93402390,969837470,10133577294,

%T 104168885570,1073411553030,11008021249370,112437630047286,

%U 1151811769082618,11687452535796630,118872499759443950

%N Number of nX5 0..1 arrays with row sums equal and column sums unequal to adjacent columns

%C Column 5 of A202742

%H R. H. Hardin, <a href="/A202739/b202739.txt">Table of n, a(n) for n = 1..31</a>

%e Some solutions for n=5

%e ..0..1..1..0..0....0..1..0..0..1....1..0..0..0..1....0..1..1..1..0

%e ..0..1..0..1..0....1..1..0..0..0....0..0..0..1..1....0..1..1..1..0

%e ..0..1..0..1..0....0..0..0..1..1....0..1..0..1..0....0..1..0..1..1

%e ..0..0..0..1..1....0..0..1..1..0....1..0..1..0..0....1..0..0..1..1

%e ..1..0..1..0..0....0..1..0..0..1....0..0..1..1..0....1..1..1..0..0

%K nonn

%O 1,1

%A _R. H. Hardin_ Dec 23 2011

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Last modified June 4 17:49 EDT 2024. Contains 373102 sequences. (Running on oeis4.)