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A202741 Number of n X 7 0..1 arrays with row sums equal and column sums unequal to adjacent columns. 0

%I #6 Apr 11 2022 12:18:39

%S 2,214,14258,613950,24620522,967878370,37121438930,1401569558590,

%T 52383342552410,1938999772255314,71224141762895090

%N Number of n X 7 0..1 arrays with row sums equal and column sums unequal to adjacent columns.

%C Column 7 of A202742.

%e Some solutions for n=3

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

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

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

%Y Cf. A202742.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 23 2011

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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)