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A302063 Number of nXn 0..1 arrays with every element equal to 0, 1, 2 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero. 1
1, 8, 148, 7070, 807601, 230634314, 163660519064, 287524499258589, 1255489680741501583, 13604053305283669077460, 365895359118873240818539121, 24430548564295449443919121195475, 4049114247665544928116295437330272275 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A302069.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..16

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A302069.

Sequence in context: A218305 A244028 A075351 * A220559 A264642 A300872

Adjacent sequences:  A302060 A302061 A302062 * A302064 A302065 A302066

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 31 2018

STATUS

approved

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Last modified January 27 08:31 EST 2020. Contains 331293 sequences. (Running on oeis4.)