A298893 Number of nX6 0..1 arrays with every element equal to 2, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

0, 13, 11, 80, 579, 2963, 12224, 72620, 426475, 2284203, 12768382, 72904621, 409673880, 2298677918, 13008113489, 73461302729, 414141245069, 2338885431088, 13210876247129, 74582366744334, 421146376787631, 2378532739728979

Offset

1,2

Comments

Column 6 of A298895.

Links

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

Example

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

Crossrefs

Cf. A298895.

Sequence in context: A206607 A196124 A196121 * A083229 A140554 A356978

Adjacent sequences: A298890 A298891 A298892 * A298894 A298895 A298896

Keyword

nonn

Author

R. H. Hardin, Jan 28 2018

Status

approved