A305014 - OEIS

A305014

Number of nX7 0..1 arrays with every element unequal to 1, 2, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

8, 306, 455, 2200, 30457, 119835, 640900, 6449924, 41160483, 271320922, 2274614514, 17677895427, 132521311532, 1072936215193, 8750546462598, 69515327539782, 564697055232340, 4648309561233697, 37766275954736455

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OFFSET

1,1

COMMENTS

Column 7 of A305015.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A305015.

Sequence in context: A305451 A304703 A316454 * A316647 A316175 A317457

Adjacent sequences: A305011 A305012 A305013 * A305015 A305016 A305017

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 23 2018

STATUS

approved