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 A277772 Number of 7Xn 0..2 arrays with every element equal to some element at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) or (1,0) both plus 1 mod 3 and minus 1 mod 3, with new values introduced in order 0..2. 0

%I

%S 0,1304,560809,280603511,145416104585,74591651561541,

%T 38224184451654485,19594056304528558357,10045114847567207328081,

%U 5149301096028551482379853,2639661525564889493885834000,1353158899116458615963424246675

%N Number of 7Xn 0..2 arrays with every element equal to some element at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) or (1,0) both plus 1 mod 3 and minus 1 mod 3, with new values introduced in order 0..2.

%C Row 7 of A277767.

%e Some solutions for n=2

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

%e ..2..2. .2..2. .2..2. .2..2. .2..2. .2..2. .2..2. .2..2. .2..2. .2..2

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

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

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

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

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

%Y Cf. A277767.

%K nonn

%O 1,2

%A _R. H. Hardin_, Oct 29 2016

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Last modified May 16 13:45 EDT 2022. Contains 353704 sequences. (Running on oeis4.)