A183708 - OEIS

%I #5 Mar 31 2012 12:35:53

%S 871232952,17600152230096,353161421431958880,7096672408605671392416,

%T 142559496381482334039141888,2863979225676951763894821578784,

%U 57535515249805594625825370853448832

%N Number of (n+1)X8 0..3 arrays with every 2X2 subblock nonsingular

%C Column 7 of A183710

%H R. H. Hardin, <a href="/A183708/b183708.txt">Table of n, a(n) for n = 1..14</a>

%e Some solutions for 3X8

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 06 2011