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%I #9 Apr 27 2021 20:56:13
%S 0,4,58,3064,221096,34811238,10551803060,6668992563052,
%T 8651918812282962,23339962598582951552,131977442018454063156484,
%U 1555694872005636764531499932,38779168607364170627075586723246
%N Number of defective 3-colorings of an n X n 0..2 array connected horizontally, diagonally and antidiagonally with exactly one mistake, and colors introduced in row-major 0..2 order.
%C Diagonal of A229534.
%e Some solutions for n=3:
%e 0 1 2 0 0 1 0 1 0 0 1 2 0 1 1 0 1 2 0 1 2
%e 0 1 0 1 2 1 0 2 1 2 1 2 0 2 0 2 1 2 0 2 0
%e 2 2 0 1 2 0 0 2 0 2 0 1 1 2 1 2 0 0 0 2 0
%Y Cf. A229534.
%K nonn
%O 1,2
%A _R. H. Hardin_, Sep 25 2013
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