A299522 Number of n X n 0..1 arrays with every element equal to 1, 3, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

0, 4, 1, 166, 7116, 278292, 135080376, 167282094170, 363524287053851

Offset

1,2

Comments

Diagonal of A299528.

Links

Table of n, a(n) for n=1..9.

Example

Some solutions for n=5
..0..0..0..1..1. .0..0..0..1..0. .0..1..1..0..1. .0..0..1..1..0
..0..0..0..0..0. .0..0..0..1..0. .1..0..1..1..0. .1..1..1..0..1
..1..1..0..1..1. .0..0..0..1..1. .0..0..0..0..0. .1..1..1..0..0
..0..0..0..0..0. .1..0..1..1..0. .1..0..1..0..0. .0..1..0..0..1
..1..1..0..0..0. .0..1..1..1..0. .0..1..1..1..1. .1..0..0..0..1

Crossrefs

Cf. A299528.

Sequence in context: A125083 A094423 A262404 * A300140 A347554 A298939

Adjacent sequences: A299519 A299520 A299521 * A299523 A299524 A299525

Keyword

nonn

Author

R. H. Hardin, Feb 11 2018

Status

approved