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 A250974 Number of (n+1)X(n+1) 0..2 arrays with no 2X2 subblock having the sum of its diagonal elements less than the absolute difference of its antidiagonal elements 0

%I #4 Nov 29 2014 07:43:18

%S 71,12077,15156945,139471732486,9416933752243198,

%T 4665050923272559405591,16956293118548007574241097692,

%U 452201064244928394467769407865217365,88482711640559551663354157554544852988982071

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

%C Diagonal of A250982

%e Some solutions for n=2

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 29 2014

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Last modified September 29 18:32 EDT 2023. Contains 365775 sequences. (Running on oeis4.)