A316611 - OEIS

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A316611

Number of nXn 0..1 arrays with every element unequal to 0, 1, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

1, 5, 14, 77, 649, 5464, 65158, 1249304, 29420195, 965313430, 47647816201, 3134382222825, 282884293077707

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Diagonal of A316615.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A316615.

Sequence in context: A007838 A306751 A305341 * A174939 A320800 A321315

Adjacent sequences: A316608 A316609 A316610 * A316612 A316613 A316614

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jul 08 2018

STATUS

approved