A260062 - OEIS

%I #4 Jul 14 2015 07:49:55

%S 48,214,1680,7725,25444,251582,1838884,7478945,76589120,1223125268,

%T 8125786040,53795046102,1356397478832,26105639799058,186181935816048,

%U 2661981784951575

%N Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00000111

%C Diagonal of A260070

%e Some solutions for n=4

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

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

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

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

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

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

%Y Cf. A260070

%K nonn

%O 1,1

%A _R. H. Hardin_, Jul 14 2015