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A298064 Number of n X n 0..1 arrays with every element equal to 2, 3, 4 or 6 king-move adjacent elements, with upper left element zero. 0
0, 1, 4, 59, 3500, 532282, 180902016, 162145163369, 357772266192414 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Diagonal of A298070.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A298070.

Sequence in context: A194534 A331712 A026586 * A298713 A058173 A074835

Adjacent sequences:  A298061 A298062 A298063 * A298065 A298066 A298067

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 11 2018

STATUS

approved

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Last modified August 3 08:21 EDT 2021. Contains 346435 sequences. (Running on oeis4.)