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%I #5 Mar 31 2012 12:36:58
%S 7,1135,1166887,6542729803,200096473566151,33391264599507183643,
%T 30407052005824642303153447,151104658685287487942495927080315
%N Number of (n+1)X(n+1) 0..3 arrays with no 2X2 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..3 introduced in row major order
%C Diagonal of A203878
%e Some solutions for n=4
%e ..0..0..0..0..0....0..0..0..0..0....0..1..0..0..0....0..0..0..0..1
%e ..1..2..1..1..2....1..1..1..1..1....2..3..2..1..2....1..1..1..2..3
%e ..3..0..0..3..3....0..2..0..2..0....0..3..2..3..0....2..2..3..0..3
%e ..3..1..1..1..0....1..1..3..1..1....0..1..0..3..0....3..0..1..2..3
%e ..0..0..0..2..2....2..2..3..2..2....2..3..2..3..0....2..0..1..2..1
%K nonn
%O 1,1
%A _R. H. Hardin_ Jan 07 2012