A298493 Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 4 or 7 king-move adjacent elements, with upper left element zero.

64, 301, 106, 263, 423, 434, 628, 1067, 1267, 1943, 2973, 4583, 6623, 10201, 15735, 23607, 37154, 58435, 88164, 137819, 219204, 340356, 535357, 850699, 1322494, 2078738, 3327832, 5245963, 8287617, 13211475, 20828700, 33025517, 52829061

Offset

1,1

Comments

Column 7 of A298494.

Links

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

Example

Some solutions for n=9
..0..1..1..1..1..0..0. .0..0..1..0..1..0..0. .0..1..0..1..0..1..0
..0..0..0..0..0..1..1. .1..1..1..0..1..1..1. .0..1..0..1..0..1..0
..1..1..0..0..1..0..1. .1..0..0..0..0..0..1. .0..1..0..1..0..1..0
..0..0..0..0..0..1..1. .1..1..1..0..1..1..1. .0..1..0..1..0..1..0
..0..1..1..1..1..0..0. .0..0..1..0..1..0..0. .1..0..0..0..0..0..1
..0..0..1..1..0..1..0. .1..0..1..1..1..0..1. .1..0..1..1..1..0..1
..1..1..1..1..1..0..0. .1..0..0..0..0..0..1. .1..0..0..0..0..0..1
..1..0..0..0..0..1..1. .0..1..0..1..0..1..0. .0..1..0..1..0..1..0
..1..1..0..0..1..0..1. .0..1..0..1..0..1..0. .0..1..0..1..0..1..0

Crossrefs

Cf. A298494.

Sequence in context: A297462 A297699 A297888 * A298293 A299387 A299186

Adjacent sequences: A298490 A298491 A298492 * A298494 A298495 A298496

Keyword

nonn

Author

R. H. Hardin, Jan 20 2018

Status

approved