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A302959 Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 3 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 0
1, 8, 154, 6206, 493132, 83644490, 28906043997, 20541759534725, 30306087158412513 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A302965.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A302965.

Sequence in context: A302259 A113268 A191908 * A188408 A089669 A288682

Adjacent sequences:  A302956 A302957 A302958 * A302960 A302961 A302962

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 16 2018

STATUS

approved

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Last modified July 24 06:56 EDT 2021. Contains 346273 sequences. (Running on oeis4.)