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A298447 Number of n X n 0..1 arrays with every element equal to 1, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero. 0
0, 4, 0, 161, 5938, 255029, 112275165, 141892377970, 300456210546842 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A298454.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A298454.

Sequence in context: A129825 A267441 A264883 * A138734 A265596 A119010

Adjacent sequences:  A298444 A298445 A298446 * A298448 A298449 A298450

KEYWORD

nonn,changed

AUTHOR

R. H. Hardin, Jan 19 2018

STATUS

approved

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Last modified June 5 16:19 EDT 2020. Contains 334852 sequences. (Running on oeis4.)