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A216609 Number of horizontal, diagonal and antidiagonal neighbor colorings of the odd squares of an nX3 array with new integer colors introduced in row major order 1
1, 1, 2, 20, 67, 1335, 6097, 192713, 1094076, 49055292, 329588907, 19602119017, 151146594991, 11399696350555, 98774751736976, 9146845346099410, 87700687826082507, 9731199828137067515, 102042888281439150263 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Column 3 of A216612

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..97

EXAMPLE

Some solutions for n=4

..x..0..x....x..0..x....x..0..x....x..0..x....x..0..x....x..0..x....x..0..x

..1..x..2....1..x..2....1..x..2....1..x..2....1..x..2....1..x..2....1..x..2

..x..3..x....x..3..x....x..3..x....x..0..x....x..3..x....x..0..x....x..0..x

..4..x..1....0..x..1....0..x..4....3..x..1....4..x..0....2..x..3....1..x..2

CROSSREFS

Sequence in context: A136905 A230644 A183907 * A226394 A287485 A003283

Adjacent sequences:  A216606 A216607 A216608 * A216610 A216611 A216612

KEYWORD

nonn

AUTHOR

R. H. Hardin Sep 10 2012

STATUS

approved

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Last modified January 22 02:46 EST 2022. Contains 350481 sequences. (Running on oeis4.)