A305013 - OEIS

A305013

Number of nX6 0..1 arrays with every element unequal to 1, 2, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

5, 165, 206, 862, 9499, 28477, 119835, 975646, 4538929, 21859448, 143294200, 795546394, 4252817253, 25783023452, 150102255565, 849190816657, 5033353494236, 29616212082249, 171767099397392, 1013127791447277

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OFFSET

1,1

COMMENTS

Column 6 of A305015.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A305015.

Sequence in context: A305450 A304702 A316453 * A316646 A316174 A317456

Adjacent sequences: A305010 A305011 A305012 * A305014 A305015 A305016

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 23 2018

STATUS

approved