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 A280485 Number of 6Xn 0..2 arrays with no element unequal to a strict majority of its horizontal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards. 0

%I

%S 0,4446,149057,2886700,48481917,767741328,11437392975,164847196124,

%T 2309124917462,31632356050545,425475246875021

%N Number of 6Xn 0..2 arrays with no element unequal to a strict majority of its horizontal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

%C Row 6 of A280480.

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

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

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

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

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

%Y Cf. A280480.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jan 04 2017

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Last modified May 16 15:08 EDT 2022. Contains 353706 sequences. (Running on oeis4.)