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A299548 Number of n X n 0..1 arrays with every element equal to 2, 3, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero. 0
0, 1, 9, 220, 37283, 19604624, 40708113490, 303433045764806, 8209941324439372141 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Diagonal of A299554.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A299554.

Sequence in context: A179153 A197669 A157692 * A079913 A205578 A221439

Adjacent sequences:  A299545 A299546 A299547 * A299549 A299550 A299551

KEYWORD

nonn

AUTHOR

R. H. Hardin, Feb 12 2018

STATUS

approved

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Last modified May 24 07:35 EDT 2022. Contains 354005 sequences. (Running on oeis4.)