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Number of (n+2)X(7+2) 0..1 arrays with each row and column not divisible by 5, read as a binary number with top and left being the most significant bits.
0

%I #3 Oct 08 2015 07:56:10

%S 5128489,2100720600,1240713997903,606552926150035,248073875762917543,

%T 101460868472471077008

%N Number of (n+2)X(7+2) 0..1 arrays with each row and column not divisible by 5, read as a binary number with top and left being the most significant bits.

%C Column 7 of A263040.

%e Some solutions for n=1

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

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

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

%Y Cf. A263040.

%K nonn

%O 1,1

%A _R. H. Hardin_, Oct 08 2015