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A232069 Number of (n+1)X(n+1) 0..1 arrays with every element equal to some horizontal, diagonal or antidiagonal neighbor, with top left element zero 0
3, 87, 6624, 2265691, 3154769585, 16761785898550, 346245388962998639, 27933597031900237580649, 8787110268003730673863070121, 10774541106851322777417902818902431 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A232076

LINKS

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

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Sequence in context: A172494 A279131 A230670 * A172723 A331645 A037112

Adjacent sequences:  A232066 A232067 A232068 * A232070 A232071 A232072

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 17 2013

STATUS

approved

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Last modified August 2 09:22 EDT 2021. Contains 346422 sequences. (Running on oeis4.)