A183790 - OEIS

%I #5 Mar 31 2012 12:35:54

%S 3500532,4142036148,4769141272937,5535599672278525,

%T 6409207767186189577,7426828822889981226524,8603578492435516321649249,

%U 9967780407278401322169609464,11547876184873263638667909674038

%N Half the number of (n+1)X8 0..2 arrays with no 2X2 subblock having sum 4

%C Column 7 of A183792

%H R. H. Hardin, <a href="/A183790/b183790.txt">Table of n, a(n) for n = 1..49</a>

%e Some solutions for 3X8

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 07 2011