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A251159 Number of (n+1)X(n+1) 0..3 arrays with no 2X2 subblock having the maximum of its diagonal elements greater than the absolute difference of its antidiagonal elements 0

%I

%S 96,5054,231618,12191612,1203787298,190531611192,50643184293432,

%T 19416483125259158,12122837536950012216,11807644473938508493957,

%U 18430004981764028431520387

%N Number of (n+1)X(n+1) 0..3 arrays with no 2X2 subblock having the maximum of its diagonal elements greater than the absolute difference of its antidiagonal elements

%C Diagonal of A251167

%e Some solutions for n=2

%e ..0..1..1....1..2..3....1..0..2....1..0..3....0..3..3....0..2..2....0..3..3

%e ..0..0..1....0..0..1....2..0..0....1..0..3....0..0..2....2..0..1....1..0..3

%e ..1..1..0....3..2..1....3..2..0....3..1..0....1..0..0....3..3..2....3..1..0

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 30 2014

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Last modified January 19 20:48 EST 2022. Contains 350466 sequences. (Running on oeis4.)