%I #3 Sep 06 2015 07:56:29

%S 0,5,218,746,10906,72186,588090,3656900,26647829,180803752,1093944096,

%T 6533839983,43705331783

%N Number of (3+1)X(n+1) 0..1 arrays with each row nonprime and column prime, read as a binary number with top and left being the most significant bits.

%C Row 3 of A261942.

%e Some solutions for n=4

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

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

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

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

%Y Cf. A261942.

%K nonn

%O 1,2

%A _R. H. Hardin_, Sep 06 2015