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A222631 Number of nX4 0..1 arrays with no more than floor(nX4/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..1 order 1

%I #4 Feb 26 2013 21:44:01

%S 4,10,34,161,707,3309,16892,89384,465258,2414240,12658133,66882546,

%T 353898321,1874207359,9950624881,52968141606,282452336722,

%U 1508213363988,8064519904852,43179574656064,231467793567740,1242085617391923

%N Number of nX4 0..1 arrays with no more than floor(nX4/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..1 order

%C Column 4 of A222635

%H R. H. Hardin, <a href="/A222631/b222631.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 26 2013

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Last modified April 18 12:53 EDT 2024. Contains 371780 sequences. (Running on oeis4.)