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A253812 Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal median nondecreasing horizontally and vertically 0

%I #4 Jan 14 2015 06:59:21

%S 512,12992,214596,1713952,20991976,250052478,1124641848,5696013500,

%T 59724420234,668675350006,2474515112828

%N Number of (n+2)X(n+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal median nondecreasing horizontally and vertically

%C Diagonal of A253820

%e Some solutions for n=2

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 14 2015

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Last modified June 3 11:24 EDT 2023. Contains 363110 sequences. (Running on oeis4.)