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A299452 Number of nXn 0..1 arrays with every element equal to 0, 2, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero. 0
1, 5, 7, 48, 1015, 19041, 750083, 67847199, 10455199270, 2719125337850 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A299458.

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A299458.

Sequence in context: A025530 A106114 A217039 * A110420 A210244 A123789

Adjacent sequences:  A299449 A299450 A299451 * A299453 A299454 A299455

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 10 2018

STATUS

approved

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Last modified April 20 09:59 EDT 2019. Contains 322309 sequences. (Running on oeis4.)