cp's OEIS Frontend

A229642 Number of defective 3-colorings of a 6 X n 0..2 array connected horizontally, diagonally and antidiagonally with exactly two mistakes, and colors introduced in row-major 0..2 order.

%I A229642 #10 Apr 28 2021 01:22:53
%S A229642 0,3924,50084,747299,11485716,170405645,2495874984,35693194243,
%T A229642 503332240292,6990933433009,96001895136772,1304362116389856,
%U A229642 17565879194817688,234673938451844201,3113368949256998744
%N A229642 Number of defective 3-colorings of a 6 X n 0..2 array connected horizontally, diagonally and antidiagonally with exactly two mistakes, and colors introduced in row-major 0..2 order.
%C A229642 Row 6 of A229637.
%H A229642 R. H. Hardin, <a href="/A229642/b229642.txt">Table of n, a(n) for n = 1..210</a>
%H A229642 R. H. Hardin, <a href="/A229642/a229642.txt">Empirical recurrence of order 69</a>
%F A229642 Empirical recurrence of order 69 (see link above).
%e A229642 Some solutions for n=3:
%e A229642   0 1 0   0 1 0   0 1 0   0 1 0   0 1 0   0 1 0   0 1 0
%e A229642   2 1 2   2 1 2   2 1 0   2 1 2   0 1 0   0 2 1   1 2 1
%e A229642   2 1 0   1 1 0   2 0 1   1 0 1   2 0 2   0 1 0   1 0 1
%e A229642   2 1 0   0 2 0   2 0 1   1 0 1   1 0 2   2 1 0   2 0 2
%e A229642   1 2 0   1 2 0   1 0 1   1 0 2   1 0 1   2 1 0   2 1 2
%e A229642   0 2 1   0 2 1   2 0 1   1 0 2   2 0 1   0 1 0   2 0 2
%K A229642 nonn
%O A229642 1,2
%A A229642 _R. H. Hardin_, Sep 27 2013