A298094 Number of n X n 0..1 arrays with every element equal to 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero.

0, 1, 0, 3, 5, 847, 16212, 6915147, 2015018055, 4040561643423

Offset

1,4

Comments

Diagonal of A298100.

Links

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

Example

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

Crossrefs

Cf. A298100.

Sequence in context: A350036 A136134 A119497 * A012783 A062655 A364547

Adjacent sequences: A298091 A298092 A298093 * A298095 A298096 A298097

Keyword

nonn

Author

R. H. Hardin, Jan 12 2018

Status

approved