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A199147 Number of nX6 0..3 arrays with values 0..3 introduced in row major order and each element equal to one or two horizontal and vertical neighbors 0

%I #4 Mar 31 2012 12:36:35

%S 6,2539,794416,316561994,117380324984,44832664800117,16925667317073175

%N Number of nX6 0..3 arrays with values 0..3 introduced in row major order and each element equal to one or two horizontal and vertical neighbors

%C Column 6 of A199149

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Nov 03 2011

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Last modified June 16 16:46 EDT 2024. Contains 373432 sequences. (Running on oeis4.)