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Number of defective 3-colorings of a 7 X n 0..2 array connected horizontally, diagonally and antidiagonally with exactly one mistake, and colors introduced in row-major 0..2 order.

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`%I #9 Apr 27 2021 21:14:58
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`%S 0,4212,59626,1379512,26566266,544403948,10551803060,205336122417,
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`%T 3913347537410,74172957575993,1391260426025666,25942784963976735,
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`%U 480614597100202422,8860662840757232528,162602761260788194310
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`%N Number of defective 3-colorings of a 7 X n 0..2 array connected horizontally, diagonally and antidiagonally with exactly one mistake, and colors introduced in row-major 0..2 order.
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`%C Row 7 of A229534.
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`%H R. H. Hardin, <a href="/A229540/b229540.txt">Table of n, a(n) for n = 1..210</a>
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`%H R. H. Hardin, <a href="/A229540/a229540.txt">Empirical recurrence of order 92</a>
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`%F Empirical recurrence of order 92 (see link above).
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`%e Some solutions for n=3:
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`%e 0 1 2 0 1 0 0 1 0 0 1 0 0 1 0 0 1 2 0 1 0
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`%e 0 1 2 0 1 0 0 2 0 0 1 0 0 2 2 0 1 0 1 2 0
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`%e 0 2 0 0 2 0 0 2 0 0 1 0 0 1 0 2 1 0 0 2 1
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`%e 1 2 0 0 1 0 0 2 0 2 1 2 0 2 0 0 2 0 0 2 0
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`%e 1 2 1 0 2 0 0 1 0 2 1 2 0 2 0 0 2 1 1 2 1
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`%e 1 2 1 1 2 1 2 2 0 0 0 2 1 2 1 1 2 1 1 2 1
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`%e 1 2 1 0 0 1 0 1 0 2 1 2 1 2 1 1 2 0 0 2 1
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`%Y Cf. A229534.
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`%K nonn
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`%O 1,2
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`%A _R. H. Hardin_, Sep 25 2013
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