The On-Line Encyclopedia of Integer Sequences (OEIS)

A299720 revision #2

A299720

Number of nX7 0..1 arrays with every element equal to 0, 2, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

1, 1192, 33804, 2501312, 174287007, 12889348273, 971255866215, 73433529818762, 5581654300729422, 424650044923971872, 32336302707253949948, 2463144123049504957119, 187653550017667556025377

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OFFSET

1,2

COMMENTS

Column 7 of A299721.

LINKS

Table of n, a(n) for n=1..13.

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A299721.

Sequence in context: A299059 A299820 A251169 * A300341 A040104 A103171

Adjacent sequences: A299717 A299718 A299719 * A299721 A299722 A299723

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 17 2018

STATUS

editing