A206319 - OEIS

%I #5 Mar 31 2012 12:37:11

%S 256,16892,10258408,30018231756,419904864999804,28153923918860656368,

%T 9069132565961324534394832,14057869699230976600019746011216

%N Number of (n+1)X(n+1) 0..3 arrays with every 2X3 or 3X2 subblock having exactly three clockwise edge increases

%C Diagonal of A206327

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 06 2012