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A186919 Number of (n+1)X6 0..3 arrays with every 2X2 subblock trace equal to exactly one or two horizontal and vertical neighbor 2X2 subblock traces 0

%I

%S 166272,86388160,15491352288,3861027028096,833994044863296,

%T 193942830390429600,43448233709038001344,9921625782478580791520

%N Number of (n+1)X6 0..3 arrays with every 2X2 subblock trace equal to exactly one or two horizontal and vertical neighbor 2X2 subblock traces

%C Column 5 of A186923

%e Some solutions for 3X6

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 28 2011

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Last modified December 8 10:59 EST 2021. Contains 349594 sequences. (Running on oeis4.)