A184650 - OEIS

%I #6 Mar 31 2012 12:36:00

%S 212898,11826498,657272274,36516002466,2028771948738,112716440618754,

%T 6262392708237282,347931154681020162,19330646430657483138,

%U 1073988006377144941794,59669511826707277139106

%N Number of (n+2)X3 0..3 arrays with each 3X3 subblock nonsingular

%C Column 1 of A184652

%H R. H. Hardin, <a href="/A184650/b184650.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for 4X3

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 19 2011