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A278012
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Number of nX6 0..2 arrays with every element plus 1 mod 3 equal to some element at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero.
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%I #4 Nov 08 2016 12:28:34
%S 0,5530,1516632,586416930,212235186204,77589535205794,
%T 28318244060569024,10338163442842553944,3774002232626515614634,
%U 1377729070961815064673478,502950248130165268403057836,183605761521188764889164686902
%N Number of nX6 0..2 arrays with every element plus 1 mod 3 equal to some element at offset (-1,-1) (-1,0) (-1,1) (0,-1) (0,1) or (1,0), with upper left element zero.
%C Column 6 of A278014.
%H R. H. Hardin, <a href="/A278012/b278012.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=2
%e ..0..1..0..0..2..2. .0..1..0..0..2..0. .0..2..0..2..2..1. .0..1..2..0..1..0
%e ..1..2..1..1..1..0. .0..2..0..1..1..1. .1..1..1..1..0..0. .0..1..0..1..2..0
%Y Cf. A278014.
%K nonn
%O 1,2
%A _R. H. Hardin_, Nov 08 2016
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