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A222991 Number of 6Xn 0..2 arrays with no more than floor(6Xn/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order 1

%I #4 Mar 11 2013 06:27:47

%S 122,1630,45718,1037326,29158784,850056406,26345532486,850132044445,

%T 28482001680709,982083041717413,34622216350782421,1240366889332857310,

%U 44950836504928408971,1642283926525837580282,60348527739514946568760

%N Number of 6Xn 0..2 arrays with no more than floor(6Xn/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order

%C Row 6 of A222986

%H R. H. Hardin, <a href="/A222991/b222991.txt">Table of n, a(n) for n = 1..17</a>

%e Some solutions for n=3

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

%e ..0..1..1....1..0..0....0..0..0....0..0..0....0..0..0....1..1..2....0..0..0

%e ..1..1..1....0..0..0....0..0..1....1..2..2....0..0..0....2..0..2....0..0..0

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

%e ..2..1..1....0..0..0....1..1..2....0..0..0....1..0..1....0..0..0....2..1..0

%e ..1..2..2....2..2..1....1..1..1....0..0..0....0..0..0....0..0..0....0..2..2

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 11 2013

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Last modified May 7 14:53 EDT 2024. Contains 372310 sequences. (Running on oeis4.)