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A229643 Number of defective 3-colorings of a 7 X n 0..2 array connected horizontally, diagonally and antidiagonally with exactly two mistakes, and colors introduced in row-major 0..2 order. 1
0, 15795, 277996, 6049298, 133784624, 2902520386, 61836040854, 1290897457785, 26533491049453, 537479161392127, 10758714918897447, 213067493458619915, 4181337838281995586, 81391742898664549466, 1573067212373296604298 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 7 of A229637.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=3:

  0 1 0   0 1 0   0 1 0   0 1 0   0 1 0   0 1 0   0 1 0

  2 1 0   0 1 2   0 1 2   0 1 2   2 1 0   0 1 0   0 1 2

  2 2 0   0 2 1   0 0 2   2 1 0   0 2 2   0 1 0   0 1 0

  0 1 0   1 2 0   2 1 2   1 2 0   0 1 0   2 1 2   0 2 0

  0 2 0   1 2 0   2 1 0   1 2 0   0 2 0   0 2 0   0 1 1

  0 1 0   0 2 0   0 1 0   1 2 1   0 2 1   1 2 1   0 1 2

  0 1 2   0 2 0   2 1 0   1 2 0   1 2 1   0 2 0   2 1 0

CROSSREFS

Sequence in context: A235530 A116493 A061733 * A216180 A112450 A063847

Adjacent sequences:  A229640 A229641 A229642 * A229644 A229645 A229646

KEYWORD

nonn

AUTHOR

R. H. Hardin, Sep 27 2013

STATUS

approved

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Last modified October 19 11:33 EDT 2021. Contains 348088 sequences. (Running on oeis4.)