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A305341 Number of n X n 0..1 arrays with every element unequal to 0, 1, 3, 5 or 8 king-move adjacent elements, with upper left element zero. 0
1, 5, 14, 77, 649, 5408, 64658, 1241359, 29268593, 960816363, 47443906836, 3123256208489, 282016871368240, 36794768206114222 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A305347.

LINKS

Table of n, a(n) for n=1..14.

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A305347.

Sequence in context: A305017 A007838 A306751 * A316611 A174939 A320800

Adjacent sequences:  A305338 A305339 A305340 * A305342 A305343 A305344

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 30 2018

STATUS

approved

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Last modified November 27 20:49 EST 2021. Contains 349395 sequences. (Running on oeis4.)