A204083 - OEIS

%I #4 Mar 31 2012 12:37:00

%S 0,1296,321696,76212900,35085052464,11178644528704,4337212764978412,

%T 1498281295226032144,567807619899311335040,205028149066906874768656,

%U 74857377988343607529835840,27424703888122495940623920100

%N Number of nX7 0..3 arrays with every element neighboring horizontally or vertically both a 0 and a 1

%C Column 7 of A204084

%e Some solutions for n=5

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

%e ..1..0..1..1..1..1..1....1..1..1..1..1..0..1....0..1..0..1..0..1..0

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Jan 10 2012