A199644 - OEIS

%I #5 Mar 31 2012 12:36:36

%S 3,288,12748,658770,32177372,1614250077,80053957248,3988024796446,

%T 198328767139736,9869645990489747,491026123739354858,

%U 24431608808618462704,1215575822472077464282,60480991464785183388557

%N Number of nX5 0..2 arrays with values 0..2 introduced in row major order and each element equal to one or two horizontal and vertical neighbors

%C Column 5 of A199647

%H R. H. Hardin, <a href="/A199644/b199644.txt">Table of n, a(n) for n = 1..177</a>

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Nov 08 2011