A306052 Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 3, 6 or 7 king-move adjacent elements, with upper left element zero.

64, 719, 3826, 22446, 321707, 3914486, 36596835, 458669749, 5842600934, 66568698945, 798332516282, 9821492891496, 117262506186344, 1405851087491116, 17027654495622693, 205003745530369522, 2465103157587732737

Offset

1,1

Comments

Column 7 of A306053.

Links

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

Example

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

Crossrefs

Cf. A306053.

Sequence in context: A316517 A304471 A316288 * A317229 A008513 A321830

Adjacent sequences: A306049 A306050 A306051 * A306053 A306054 A306055

Keyword

nonn

Author

R. H. Hardin, Jun 18 2018

Status

approved