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A263116 Number of (n+2)X(4+2) 0..1 arrays with each row and column not divisible by 7, read as a binary number with top and left being the most significant bits. 1

%I #4 Oct 09 2015 21:55:01

%S 28626,2451774,165679122,8973167514,510985828470,28342984553670,

%T 1530508039933938,83206719012737838,4508387196335847570,

%U 243451005609403209066,13157531041392145899030,710808868574546427138918

%N Number of (n+2)X(4+2) 0..1 arrays with each row and column not divisible by 7, read as a binary number with top and left being the most significant bits.

%C Column 4 of A263117.

%H R. H. Hardin, <a href="/A263116/b263116.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=1

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

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

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

%Y Cf. A263117.

%K nonn

%O 1,1

%A _R. H. Hardin_, Oct 09 2015

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Last modified April 16 09:52 EDT 2024. Contains 371698 sequences. (Running on oeis4.)