A298085 Number of nX6 0..1 arrays with every element equal to 2, 3, 5 or 6 king-move adjacent elements, with upper left element zero.

0, 13, 7, 76, 520, 2767, 11202, 66148, 385999, 2040394, 11280309, 63669582, 352938921, 1954934444, 10928716512, 60920261087, 339016489892, 1890631777955, 10543750377805, 58766637746893, 327645644514925, 1827099377713191

Offset

1,2

Comments

Column 6 of A298087.

Links

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

Example

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

Crossrefs

Cf. A298087.

Sequence in context: A298257 A298928 A152142 * A177427 A110056 A159562

Adjacent sequences: A298082 A298083 A298084 * A298086 A298087 A298088

Keyword

nonn

Author

R. H. Hardin, Jan 12 2018

Status

approved