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A300960 Number of n X n 0..1 arrays with every element equal to 0, 2, 3, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 0
1, 3, 16, 327, 15861, 2472677, 1111779576, 1357319826867, 4569367213244153, 42289687408658327593 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A300966.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A300966.

Sequence in context: A013923 A053466 A005031 * A224440 A054939 A081782

Adjacent sequences:  A300957 A300958 A300959 * A300961 A300962 A300963

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 17 2018

STATUS

approved

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Last modified December 6 12:56 EST 2021. Contains 349563 sequences. (Running on oeis4.)