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%I #4 Oct 29 2016 07:29:46
%S 0,1584,220549,221983169,110036582827,67079817376928,
%T 38224184451654485,22257182633194608078,12869705874813306766481,
%U 7458446559929491293690613,4319259920844964071189461906,2501924582698962860252708115060
%N Number of nX7 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 Column 7 of A277767.
%H R. H. Hardin, <a href="/A277766/b277766.txt">Table of n, a(n) for n = 1..17</a>
%e Some solutions for n=2
%e ..0..1..2..0..1..2..0. .0..1..2..2..0..1..2. .0..1..2..0..2..1..0
%e ..2..1..2..0..1..0..1. .2..1..0..1..0..1..0. .2..2..0..1..0..2..2
%Y Cf. A277767.
%K nonn
%O 1,2
%A _R. H. Hardin_, Oct 29 2016