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Number of (n+1)X(6+1) 0..3 arrays with no 2X2 subblock having the sum of its diagonal elements less than the absolute difference of its antidiagonal elements
1

%I #4 Dec 02 2014 13:45:49

%S 130668665,1182680672547,10632092711682548,95695193651485137766,

%T 861234687688644770671972,7751024510134118526532685644,

%U 69758457677840521663637000916478,627819220679549012794538463118384215

%N Number of (n+1)X(6+1) 0..3 arrays with no 2X2 subblock having the sum of its diagonal elements less than the absolute difference of its antidiagonal elements

%C Column 6 of A251402

%H R. H. Hardin, <a href="/A251400/b251400.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=1

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 02 2014