A299186 Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

64, 301, 137, 952, 4115, 12847, 59287, 270914, 1088697, 5017429, 22861814, 97586048, 444232955, 2021643018, 8825115683, 39848981071, 180691585774, 798045866431, 3587277159543, 16208542978994, 72063515690216

Offset

1,1

Comments

Column 7 of A299187.

Links

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

Example

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

Crossrefs

Cf. A299187.

Sequence in context: A298493 A298293 A299387 * A299947 A372093 A251196

Adjacent sequences: A299183 A299184 A299185 * A299187 A299188 A299189

Keyword

nonn

Author

R. H. Hardin, Feb 04 2018

Status

approved