A298253 Number of n X n 0..1 arrays with every element equal to 2, 3, 5 or 8 king-move adjacent elements, with upper left element zero.

0, 1, 1, 11, 86, 895, 13991, 435534, 16014301, 939457994

Offset

1,4

Comments

Diagonal of A298259.

Links

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

Example

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

Crossrefs

Cf. A298259.

Sequence in context: A014917 A080962 A243879 * A277465 A357535 A232078

Adjacent sequences: A298250 A298251 A298252 * A298254 A298255 A298256

Keyword

nonn

Author

R. H. Hardin, Jan 15 2018

Status

approved