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A222770 Number of 2Xn 0..1 arrays with exactly floor(2Xn/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order 1

%I

%S 0,3,4,11,18,73,152,470,1022,3361,7840,23386,57626,172387,434280,

%T 1257025,3275034,9399647,24776572,70325187,188540168,531573662,

%U 1436226680,4032772569,10987025446,30742228871,84180549328,235159618106

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

%C Row 2 of A222769

%H R. H. Hardin, <a href="/A222770/b222770.txt">Table of n, a(n) for n = 1..107</a>

%e All solutions for n=3

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Mar 05 2013

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Last modified July 20 05:56 EDT 2019. Contains 325168 sequences. (Running on oeis4.)