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A185770 Number of (n+1)X(n+1) 0..2 arrays with no 2X2 subblock sum equal to any horizontal or vertical neighbor 2X2 subblock sum 0

%I

%S 81,7074,2046098,2171002788,7861640359954

%N Number of (n+1)X(n+1) 0..2 arrays with no 2X2 subblock sum equal to any horizontal or vertical neighbor 2X2 subblock sum

%C Diagonal of A185777

%e Some solutions for 3X3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 03 2011

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Last modified May 17 19:21 EDT 2022. Contains 353778 sequences. (Running on oeis4.)