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%I #6 Dec 18 2015 18:18:05
%S 1,6,2025,20611956,3309942226828,6126537051572916244,
%T 126664397726626418134051983
%N Number of n X n 0..5 arrays with every 2X2 subblock containing exactly one value repeat, and new values 0..5 introduced in row major order
%C Diagonal of A209744
%e Some solutions for n=5
%e ..0..0..0..0..1....0..0..0..1..1....0..0..0..0..0....0..0..0..0..0
%e ..1..2..1..2..0....1..2..1..2..0....1..2..1..2..1....1..2..1..2..1
%e ..0..1..0..0..3....1..0..0..0..3....0..0..0..0..0....0..1..0..2..3
%e ..1..2..1..2..2....3..3..4..1..0....1..2..1..2..1....1..4..4..0..2
%e ..0..2..3..1..0....1..4..5..4..0....0..0..1..0..0....5..5..2..0..1
%K nonn
%O 1,2
%A _R. H. Hardin_ Mar 12 2012