A298134 Number of n X n 0..1 arrays with every element equal to 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero.

0, 1, 0, 10, 88, 917, 14422, 467043, 17828062, 1081228309

Offset

1,4

Comments

Diagonal of A298139.

Links

Table of n, a(n) for n=1..10.

Example

Some solutions for n=7
..0..0..1..1..1..0..0. .0..0..0..0..0..0..0. .0..0..1..0..0..0..1
..0..1..0..1..0..0..1. .0..1..1..1..1..1..0. .0..1..1..1..0..1..1
..1..0..0..1..1..1..1. .1..0..0..0..0..0..1. .0..1..0..1..0..0..1
..1..1..1..0..0..0..0. .0..1..1..1..1..0..1. .0..1..0..0..1..1..0
..1..0..1..0..1..1..0. .1..0..0..0..0..1..1. .0..1..0..1..0..0..0
..0..0..1..0..1..0..1. .0..1..1..1..1..1..0. .0..1..0..1..0..1..0
..0..1..1..0..0..1..1. .0..0..0..0..0..0..0. .0..0..1..0..1..1..1

Crossrefs

Cf. A298139.

Sequence in context: A165148 A287828 A264320 * A163030 A302149 A269008

Adjacent sequences: A298131 A298132 A298133 * A298135 A298136 A298137

Keyword

nonn

Author

R. H. Hardin, Jan 13 2018

Status

approved