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A229636 Number of defective 3-colorings of an n X 7 0..2 array connected horizontally, diagonally and antidiagonally with exactly two mistakes, and colors introduced in row-major 0..2 order. 1
120, 5392, 136778, 3723370, 98015235, 2495874984, 61836040854, 1498317588826, 35650331594818, 835527599342816, 19334282699326025, 442561024351155220, 10035487974561746994, 225705889177614527760, 5039777091823275662663 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A229637.

LINKS

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

R. H. Hardin, Empirical recurrence of order 57

FORMULA

Empirical recurrence of order 57 (see link above).

EXAMPLE

Some solutions for n=3:

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

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

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

CROSSREFS

Sequence in context: A031145 A126245 A221435 * A282431 A008661 A246216

Adjacent sequences:  A229633 A229634 A229635 * A229637 A229638 A229639

KEYWORD

nonn

AUTHOR

R. H. Hardin, Sep 27 2013

STATUS

approved

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Last modified December 2 03:43 EST 2021. Contains 349437 sequences. (Running on oeis4.)