A298580 Number of nX6 0..1 arrays with every element equal to 1, 2, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

5, 49, 113, 844, 3284, 16521, 90381, 457878, 2383346, 12834179, 68034896, 360124819, 1923634836, 10262125104, 54658517756, 291557084959, 1555797575002, 8298896752343, 44272773568783, 236226451253835, 1260403679006659

Offset

1,1

Comments

Column 6 of A298582.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Cf. A298582.

Sequence in context: A079837 A297957 A298773 * A299572 A266127 A343690

Adjacent sequences: A298577 A298578 A298579 * A298581 A298582 A298583

Keyword

nonn

Author

R. H. Hardin, Jan 22 2018

Status

approved