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A223015 Number of 4Xn 0..1 arrays with no more than floor(4Xn/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order 1

%I

%S 8,34,169,840,4685,27159,162547,990115,6118763,38172647,239969655,

%T 1517064784,9633861872,61400164050,392501061255,2515493966790,

%U 16156763152645,103972548325169,670214851495833,4326757779281260

%N Number of 4Xn 0..1 arrays with no more than floor(4Xn/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order

%C Row 4 of A223012

%H R. H. Hardin, <a href="/A223015/b223015.txt">Table of n, a(n) for n = 1..45</a>

%e Some solutions for n=3

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 11 2013

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Last modified June 30 22:42 EDT 2022. Contains 354945 sequences. (Running on oeis4.)