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A229684 Number of defective 3-colorings of an nX7 0..2 array connected diagonally and antidiagonally with exactly two mistakes, and colors introduced in row-major 0..2 order 1
0, 101376, 7952256, 437924880, 21063718224, 937213830720, 39647663129952, 1617006498774912, 64143524707305984, 2489243835565159488, 94897266574306915296, 3564781098414437505600, 132254323024723203273120 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 7 of A229685

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..172

R. H. Hardin, Empirical recurrence of order 46

FORMULA

Empirical recurrence of order 46 (see link above)

EXAMPLE

Some solutions for n=3

..0..0..1..1..1..0..1....0..0..1..0..1..0..1....0..1..1..2..1..2..1

..1..0..2..0..2..0..1....2..0..1..0..1..0..1....2..0..0..0..0..0..0

..0..0..1..0..2..0..1....2..2..2..0..1..2..2....2..1..1..1..2..1..0

CROSSREFS

Sequence in context: A031678 A251959 A250631 * A187642 A023077 A077760

Adjacent sequences:  A229681 A229682 A229683 * A229685 A229686 A229687

KEYWORD

nonn

AUTHOR

R. H. Hardin Sep 27 2013

STATUS

approved

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Last modified September 18 07:39 EDT 2020. Contains 337166 sequences. (Running on oeis4.)