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

Offset: 1

Author

R. H. Hardin, Jan 25 2017

Keywords

• nonn

Comments

Row 6 of A281605.

Examples

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

Links

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

Crossrefs

Cf. A281605.