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%I #5 Dec 31 2013 06:33:53
%S 69,9207,6566460,24157113543,449708506898208,41871771443346465840,
%T 19350145309183022128305720,44147611144852903747954064790315,
%U 495356111860226608697583545499495505848
%N Number of (n+1)X(n+1) 0..2 arrays with each 2X2 subblock having the number of clockwise edge increases less than or equal to the number of counterclockwise edge increases
%C Diagonal of A234832
%H R. H. Hardin, <a href="/A234824/b234824.txt">Table of n, a(n) for n = 1..10</a>
%e Some solutions for n=2
%e ..0..0..0....1..0..0....1..1..2....2..0..1....0..2..2....1..0..0....2..2..0
%e ..2..2..2....2..0..1....1..2..2....0..0..0....1..0..0....1..1..2....2..2..0
%e ..0..0..1....0..0..0....2..2..0....2..2..2....0..0..2....2..0..1....0..0..1
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 31 2013
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