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A302454 Number of n X n 0..1 arrays with every element equal to 0, 2, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 0
1, 2, 18, 10, 924, 5266, 404761, 26036557, 4110999261, 1386699669527 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A302460.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A302460.

Sequence in context: A093481 A132629 A288161 * A303236 A174708 A328648

Adjacent sequences:  A302451 A302452 A302453 * A302455 A302456 A302457

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 08 2018

STATUS

approved

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Last modified November 28 13:32 EST 2021. Contains 349410 sequences. (Running on oeis4.)