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A206237 Number of (n+1) X 8 0..3 arrays with every 2 X 3 or 3 X 2 subblock having exactly two equal edges, and new values 0..3 introduced in row major order. 1

%I

%S 294546,943584,3503136,95322432,1122086640,22535636736,649065145152,

%T 8026428934128,163621204516992,4735717646406528,58825697658136176,

%U 1199179807904946432,34708074630513355776,431133538136479945968

%N Number of (n+1) X 8 0..3 arrays with every 2 X 3 or 3 X 2 subblock having exactly two equal edges, and new values 0..3 introduced in row major order.

%C Column 7 of A206238.

%H R. H. Hardin, <a href="/A206237/b206237.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = a(n-1) +7329*a(n-3) -7329*a(n-4) for n>11.

%e Some solutions for n=4:

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 05 2012

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Last modified January 21 19:21 EST 2022. Contains 350480 sequences. (Running on oeis4.)