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A223005 Number of n X n 0..1 arrays with no more than floor(n X n/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order 0

%I

%S 1,4,24,840,35471,8156595,2073830655,2804191942757,4149994855051281,

%T 32191007835248846536,272625366029849993313502,

%U 11994700692484110855119938470

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

%C Diagonal of A223012

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Mar 11 2013

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Last modified May 22 13:12 EDT 2022. Contains 353950 sequences. (Running on oeis4.)