A262238 - OEIS

A262238

Number of (n+3)X(3+3) 0..1 arrays with each row and column divisible by 11, read as a binary number with top and left being the most significant bits.

%I #4 Sep 15 2015 18:38:23

%S 6,13,60,238,1148,5057,26546,110661,511785,2491813,12876278,66268745,

%T 361165100,1977169086,10943808160,61070299589,345176047426,

%U 1958545060649,11211230933113,64629555275473,375429154991574,2190171807822589

%N Number of (n+3)X(3+3) 0..1 arrays with each row and column divisible by 11, read as a binary number with top and left being the most significant bits.

%C Column 3 of A262240.

%H R. H. Hardin, <a href="/A262238/b262238.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

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

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

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

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

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

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

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

%Y Cf. A262240.

%K nonn

%O 1,1

%A _R. H. Hardin_, Sep 15 2015