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A296389 Number of n X n 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 1 or 3 neighboring 1's. 0
1, 6, 36, 597, 21769, 1740403, 313843472, 124433749976, 109752217137032, 214577693619739949, 930506314275700114026, 8950548080850337784771728 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A296396.

LINKS

Table of n, a(n) for n=1..12.

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A296396.

Sequence in context: A201540 A195229 A339300 * A077290 A222780 A206636

Adjacent sequences:  A296386 A296387 A296388 * A296390 A296391 A296392

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 11 2017

STATUS

approved

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Last modified July 25 08:21 EDT 2021. Contains 346285 sequences. (Running on oeis4.)