A230619 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A230619

Number of 7Xn 0..2 arrays x(i,j) with each element horizontally or antidiagonally next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero

0, 0, 0, 509978, 128706852, 35145166536, 8937075346246, 2294186499807542, 587879941920096164, 150672100573449544628, 38618667880671318212660, 9898104313860041433700268, 2536935635060076589332989468

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,4

COMMENTS

Row 7 of A230614

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..27

EXAMPLE

Some solutions for n=4

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A263958 A273987 A250057 * A176655 A123321 A258362

Adjacent sequences: A230616 A230617 A230618 * A230620 A230621 A230622

KEYWORD

nonn

AUTHOR

R. H. Hardin, Oct 25 2013

STATUS

approved