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Number of (n+1)X7 0..6 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements
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%I #4 Mar 31 2012 12:36:58

%S 236513641,195759462871,209668438383145,247090069595954263,

%T 300614697430789927465

%N Number of (n+1)X7 0..6 arrays with every 2X2 subblock having equal diagonal elements or equal antidiagonal elements

%C Column 6 of A203887

%e Some solutions for n=4

%e ..3..0..2..2..0..0..3....4..0..1..1..5..3..3....3..4..0..3..3..1..2

%e ..4..3..0..2..2..0..0....0..5..0..1..1..5..3....2..3..4..0..3..3..1

%e ..5..4..3..0..2..2..0....3..0..3..0..1..1..5....3..1..3..4..0..3..3

%e ..2..5..4..3..0..2..2....1..3..4..3..0..1..1....4..3..4..2..4..0..3

%e ..4..2..5..4..3..0..2....1..1..3..5..3..0..1....0..4..5..4..0..6..0

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 07 2012