cp's OEIS Frontend

A229599 Number of defective 3-colorings of an n X n 0..2 array connected horizontally and vertically with exactly two mistakes, and colors introduced in row-major 0..2 order.

%I A229599 #9 Apr 27 2021 21:25:11
%S A229599 0,6,396,35182,5655616,1840258874,1279020266434,1956482857537638,
%T A229599 6709261067536603464,52210936089708881164828,
%U A229599 929873887535519786302080272,38136664055521875662056947040494
%N A229599 Number of defective 3-colorings of an n X n 0..2 array connected horizontally and vertically with exactly two mistakes, and colors introduced in row-major 0..2 order.
%C A229599 Diagonal of A229606.
%e A229599 Some solutions for n=3:
%e A229599   0 1 1   0 0 1   0 1 0   0 1 0   0 1 0   0 1 1   0 1 2
%e A229599   1 0 0   1 1 2   0 2 1   1 2 2   0 2 2   0 2 0   2 2 1
%e A229599   2 1 2   0 2 1   0 1 2   0 2 0   1 0 1   1 0 1   2 0 2
%Y A229599 Cf. A229606.
%K A229599 nonn
%O A229599 1,2
%A A229599 _R. H. Hardin_, Sep 26 2013