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A262469 Number of (n+1)X(5+1) 0..1 arrays with each row divisible by 3 and each column divisible by 5, read as a binary number with top and left being the most significant bits. 1

%I #4 Sep 23 2015 18:50:04

%S 1,22,484,3055,30229,552430,11489332,198237391,3805146805,77803476910,

%T 1612625364820,33119154814159,687120423331861,14386036609956334,

%U 302135208204396148,6368273090580898255,134603658832727226229

%N Number of (n+1)X(5+1) 0..1 arrays with each row divisible by 3 and each column divisible by 5, read as a binary number with top and left being the most significant bits.

%C Column 5 of A262472.

%H R. H. Hardin, <a href="/A262469/b262469.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

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

%Y Cf. A262472.

%K nonn

%O 1,2

%A _R. H. Hardin_, Sep 23 2015

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Last modified April 18 09:47 EDT 2024. Contains 371779 sequences. (Running on oeis4.)