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A222765 Number of nX4 0..1 arrays with exactly floor(nX4/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order 1

%I

%S 3,11,66,465,3431,25772,196185,1508369,11685222,91068653,713197411,

%T 5607868082,44244333098,350085423285,2776997948510,22076166728109,

%U 175834747565068,1402892278684566,11209941707509701,89696333927946099

%N Number of nX4 0..1 arrays with exactly floor(nX4/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order

%C Column 4 of A222769

%H R. H. Hardin, <a href="/A222765/b222765.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 05 2013

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Last modified July 4 22:27 EDT 2022. Contains 355086 sequences. (Running on oeis4.)