A206672 - OEIS

%I #7 Dec 13 2015 21:17:02

%S 7572,47106,319698,2046168,14200242,97476666,700650756,5009030472,

%T 36741349836,268711237302,1994098917228,14775953774574,

%U 110406362734710,824271504884262,6183800255704620,46369341402893430,348694541730025260

%N Number of (n+1) X 5 0..2 arrays with no 2 X 2 subblock having the same number of clockwise edge increases as its horizontal neighbors or the same number of counterclockwise edge increases as its vertical neighbors.

%C Column 4 of A206676.

%H R. H. Hardin, <a href="/A206672/b206672.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4:

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 11 2012