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A206203 Number of (n+1)X6 0..3 arrays with every 2X3 or 3X2 subblock having exactly one clockwise edge increases 1

%I #5 Mar 31 2012 12:37:10

%S 29724,22576,27400,70168,118936,236488,713408,1226384,2475328,7286528,

%T 12463904,24915264,72915680,124641664,249152672,729156800,1246416640,

%U 2491526720,7291568000,12464166400,24915267200,72915680000,124641664000

%N Number of (n+1)X6 0..3 arrays with every 2X3 or 3X2 subblock having exactly one clockwise edge increases

%C Column 5 of A206206

%H R. H. Hardin, <a href="/A206203/b206203.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = 10*a(n-3) for n>15

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 04 2012

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Last modified April 25 09:38 EDT 2024. Contains 371967 sequences. (Running on oeis4.)