%I #7 Mar 02 2023 13:17:43
%S 108173,9502090,979571551,97605128794,10366271787461,1046956456530150,
%T 109899225787392773,11211535684842527722,1169685856854744262666,
%U 119879347132519641324542,12459568360483143825667514
%N Number of (n+1) X 7 0..3 arrays with every 2 X 2 subblock having the same number of equal edges as its horizontal neighbors and a different number from its vertical neighbors, and new values 0..3 introduced in row major order.
%C Column 6 of A205609.
%H R. H. Hardin, <a href="/A205607/b205607.txt">Table of n, a(n) for n = 1..17</a>
%e Some solutions for n=4
%e ..0..1..1..2..2..1..0....0..0..0..1..0..0..2....0..0..0..0..1..2..0
%e ..2..2..3..3..0..1..2....0..3..0..0..0..2..2....0..2..0..1..1..2..2
%e ..3..2..2..3..0..1..2....0..2..2..1..3..3..1....1..1..0..3..0..0..3
%e ..3..0..1..3..2..1..3....2..2..1..1..3..1..1....0..1..0..0..0..3..3
%e ..3..0..1..3..2..1..1....3..0..0..2..2..2..0....2..1..3..1..2..2..0
%Y Cf. A205609.
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 29 2012
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