A281609 - OEIS

A281609

Number of 6Xn 0..2 arrays with no element equal to more than one of its horizontal, diagonal or antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.

122, 9188, 95623, 2563481, 69506779, 1732267694, 44428349137, 1138837839480, 29102840547371, 744335104686091, 19034344218360000, 486715748229292254, 12445950255418792107, 318255588377585182015, 8138127052120466124265

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

OFFSET

1,1

COMMENTS

Row 6 of A281605.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..139

EXAMPLE

Some solutions for n=3

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

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

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