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Number of nX6 0..3 arrays with every element plus 1 mod 4 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 #3 Nov 14 2016 22:31:04

%S 0,6381,6715738,6196345742,5858713218010,5537142857552112,

%T 5232919178331757631,4945638025497366239942,4674127103296221122266834,

%U 4417520697715221210576165981

%N Number of nX6 0..3 arrays with every element plus 1 mod 4 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 A278188.

%e Some solutions for n=2

%e ..0..2..3..0..2..1. .0..1..2..3..3..1. .0..3..2..1..3..2. .0..1..0..3..0..3

%e ..1..1..3..1..3..2. .3..3..1..0..0..2. .1..2..1..2..0..1. .3..2..1..2..1..2

%Y Cf. A278188.

%K nonn

%O 1,2

%A _R. H. Hardin_, Nov 14 2016