A304478 - OEIS

A304478

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

64, 432, 428, 2325, 8058, 35462, 132348, 573938, 2341508, 9662652, 39282514, 162495617, 669930287, 2768921759, 11414416244, 47122544293, 194594846556, 804284802952, 3323226448845, 13732491912928, 56753164938552

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OFFSET

1,1

COMMENTS

Column 7 of A304479.

LINKS

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

EXAMPLE

Some solutions for n=5

..0..0..1..1..1..0..0. .0..0..0..0..1..1..1. .0..0..0..1..1..0..0

..1..1..1..1..1..1..1. .1..0..1..1..1..1..1. .0..0..1..0..1..1..1

..1..1..1..1..1..1..1. .0..1..1..1..1..1..0. .0..0..0..1..1..1..1

..1..1..1..1..1..1..0. .1..1..1..1..1..1..0. .0..0..0..0..1..1..1

..0..0..1..1..1..1..0. .1..1..1..1..1..1..1. .0..0..0..1..0..1..1

CROSSREFS

Cf. A304479.

Sequence in context: A184765 A303799 A305244 * A316303 A304847 A316544

Adjacent sequences: A304475 A304476 A304477 * A304479 A304480 A304481

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 13 2018

STATUS

approved