A304764 - OEIS

A304764

Number of nX5 0..1 arrays with every element unequal to 2, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero.

0, 61, 609, 14831, 316639, 6978743, 153265405, 3370551763, 74123574757, 1630186115855, 35852814076173, 788517491160890, 17342027096153103, 381406953690484427, 8388366572399262975, 184487188445903163586

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OFFSET

1,2

COMMENTS

Column 5 of A304767.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A304767.

Sequence in context: A355602 A069595 A235009 * A316508 A068850 A142667

Adjacent sequences: A304761 A304762 A304763 * A304765 A304766 A304767

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 18 2018

STATUS

approved