A304846 - OEIS

A304846

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

32, 184, 419, 1638, 12763, 67025, 294924, 1719748, 9770201, 48882277, 259675892, 1438798433, 7606400497, 40079694163, 216576244679, 1160846367900, 6162481677404, 32970820534467, 176735199566200, 942925723444559

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OFFSET

1,1

COMMENTS

Column 6 of A304848.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A304848.

Sequence in context: A316302 A165002 A165010 * A316543 A306058 A317236

Adjacent sequences: A304843 A304844 A304845 * A304847 A304848 A304849

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 19 2018

STATUS

approved