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A305763 Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 3, 4 or 7 king-move adjacent elements, with upper left element zero. 0
1, 8, 141, 4893, 332676, 47791549, 14187207394, 8563002028726, 10773063087952176 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A305769.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A305769.

Sequence in context: A090931 A239757 A295242 * A180357 A317112 A320396

Adjacent sequences:  A305760 A305761 A305762 * A305764 A305765 A305766

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jun 10 2018

STATUS

approved

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Last modified June 19 17:53 EDT 2021. Contains 345144 sequences. (Running on oeis4.)