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A297368 Number of nXn 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 0, 1 or 2 neighboring 1s. 1
2, 16, 393, 33054, 9554038, 9012089653, 28559447121714, 303815967798840330, 10773278233104610398411, 1277577652466325205472347977, 506760911000629827324155339742511 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A297374.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..19

EXAMPLE

Some solutions for n=5

..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0

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

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

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

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

CROSSREFS

Cf. A297374.

Sequence in context: A012390 A009613 A012388 * A012752 A188904 A189104

Adjacent sequences:  A297365 A297366 A297367 * A297369 A297370 A297371

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 29 2017

STATUS

approved

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Last modified March 29 05:39 EDT 2020. Contains 333105 sequences. (Running on oeis4.)