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A299655 Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero. 0
1, 8, 227, 22087, 7411398, 8607101770, 34546300829517, 478911551660693464, 22930235691929943217996 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A299661.

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions for n=5

..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0

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

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

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

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

CROSSREFS

Cf. A299661.

Sequence in context: A193786 A213799 A316809 * A033508 A320365 A317559

Adjacent sequences:  A299652 A299653 A299654 * A299656 A299657 A299658

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 15 2018

STATUS

approved

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Last modified May 6 08:24 EDT 2021. Contains 343580 sequences. (Running on oeis4.)