A299560 Number of n X 7 0..1 arrays with every element equal to 0, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

1, 130, 121, 734, 3919, 18032, 88551, 451972, 2321249, 12137569, 63355517, 331023922, 1728150269, 9030802400, 47208375405, 246881037203, 1291394949698, 6756128612030, 35346832154347, 184937519180936, 967629683194543

Offset

1,2

Comments

Column 7 of A299561.

Links

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

Example

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

Crossrefs

Cf. A299561.

Sequence in context: A297942 A298553 A298726 * A043604 A250740 A025372

Adjacent sequences: A299557 A299558 A299559 * A299561 A299562 A299563

Keyword

nonn

Author

R. H. Hardin, Feb 12 2018

Status

approved