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A255026 Number of (n+2)X(7+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 or 1 and no antidiagonal sum 0 or 1 and no row sum 0 or 1 and no column sum 0 or 1 1

%I #4 Feb 13 2015 07:46:22

%S 2853,23077,206739,1669286,13460633,110131505,896763036,7301549016,

%T 59570598618,485457428280,3954090473055,32222610105483,

%U 262627685087211,2140187356615066,17439608164244753,142114394703257737

%N Number of (n+2)X(7+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 or 1 and no antidiagonal sum 0 or 1 and no row sum 0 or 1 and no column sum 0 or 1

%C Column 7 of A255027

%H R. H. Hardin, <a href="/A255026/b255026.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=2

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

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

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

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

%Y Cf. A255027

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 13 2015

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)