A298725 Number of nX6 0..1 arrays with every element equal to 0, 2, 3, 5 or 8 king-move adjacent elements, with upper left element zero.

1, 65, 57, 230, 1041, 4001, 16320, 67159, 281930, 1196239, 5097819, 21700708, 92361718, 393375679, 1675409096, 7138020130, 30417861481, 129627100074, 552440958797, 2354439976293, 10034502784748, 42766999408555

Offset

1,2

Comments

Column 6 of A298727.

Links

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

Example

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

Crossrefs

Cf. A298727.

Sequence in context: A298552 A302458 A303240 * A299559 A374287 A130764

Adjacent sequences: A298722 A298723 A298724 * A298726 A298727 A298728

Keyword

nonn

Author

R. H. Hardin, Jan 25 2018

Status

approved