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Number of defective 3-colorings of an n X n 0..2 array connected horizontally and vertically with exactly one mistake and colors introduced in row-major 0..2 order
1

%I #6 Dec 18 2015 18:18:41

%S 0,4,140,7940,903332,221410052,120864516084,149656305350148,

%T 425051698921207676,2789532529161418879776,42518582519087835706922360,

%U 1510724712014268724836823960708,125472358126936901810932026644960976

%N Number of defective 3-colorings of an n X n 0..2 array connected horizontally and vertically with exactly one mistake and colors introduced in row-major 0..2 order

%C Diagonal of A229460

%H R. H. Hardin, <a href="/A229453/b229453.txt">Table of n, a(n) for n = 1..14</a>

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Sep 24 2013