cp's OEIS Frontend

A229579 Number of defective 3-colorings of an n X n 0..2 array connected horizontally and antidiagonally with exactly one mistake, and colors introduced in row-major 0..2 order.

%I A229579 #9 Apr 27 2021 21:16:23
%S A229579 0,6,264,19764,2865780,890824020,613195191972,954838111013352,
%T A229579 3403478388512845692,27993333042034653078324,
%U A229579 534183142761328458054883788,23742792574386065523445979163924
%N A229579 Number of defective 3-colorings of an n X n 0..2 array connected horizontally and antidiagonally with exactly one mistake, and colors introduced in row-major 0..2 order.
%C A229579 Diagonal of A229586.
%e A229579 Some solutions for n=3:
%e A229579   0 1 2   0 1 0   0 1 0   0 1 2   0 1 2   0 1 0   0 1 0
%e A229579   0 2 1   2 0 2   1 2 0   2 0 1   0 1 2   2 2 1   2 2 1
%e A229579   1 0 1   2 1 0   1 2 1   2 1 0   0 2 0   1 2 1   1 0 2
%Y A229579 Cf. A229586.
%K A229579 nonn
%O A229579 1,2
%A A229579 _R. H. Hardin_, Sep 26 2013