A147354 - OEIS

%I #4 Mar 31 2012 12:35:16

%S 1,1,1,5,1,9,9,64,169,2060,1751,117702,30379,5432661,2655229,

%T 490197084,609857434,163861816417,142845961897,117181491908400,

%U 48229913065428,107790147306614349,44573112130566379,164640449018425801557

%N Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 0110-0110-1111 pattern in any orientation.

%e Maximal 8 X 8 example

%e .1.0.0.0.0.0.0.1

%e .1.1.1.0.0.1.1.1

%e .1.1.1.0.0.1.1.1

%e .1.0.0.0.0.0.0.1

%e .0.0.1.0.0.1.0.0

%e .1.1.1.0.0.1.1.1

%e .1.1.1.0.0.1.1.1

%e .0.0.1.0.0.1.0.0

%K nonn

%O 1,4

%A _R. H. Hardin_