A262317 - OEIS

%I #4 Sep 17 2015 22:22:27

%S 19,61,361,6043,37873,413893,8003035,103003837,1659181705,30797072443,

%T 511038639601,9076599454261,167313442296139,2990829944907421,

%U 54803016760339465,1017782964712240411,18753725206393581553

%N Number of (n+2)X(5+2) 0..1 arrays with each row and column divisible by 7, read as a binary number with top and left being the most significant bits.

%C Column 5 of A262319.

%H R. H. Hardin, <a href="/A262317/b262317.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

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

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

%Y Cf. A262319.

%K nonn

%O 1,1

%A _R. H. Hardin_, Sep 17 2015