A304426 Number of nX7 0..1 arrays with every element unequal to 1, 2, 3, 4 or 5 king-move adjacent elements, with upper left element zero.

8, 5824, 210954, 11085965, 536823135, 26510744474, 1305482386171, 64363459841666, 3173399640697899, 156482480979101412, 7716615213172103411, 380537936646809324687, 18766124693821831394655, 925451422109734164136747

Offset

1,1

Comments

Column 7 of A304427.

Links

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

Example

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

Crossrefs

Cf. A304427.

Sequence in context: A178329 A062030 A052497 * A316281 A305960 A317221

Adjacent sequences: A304423 A304424 A304425 * A304427 A304428 A304429

Keyword

nonn

Author

R. H. Hardin, May 12 2018

Status

approved