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A297601 Number of n X n 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 0, 1 or 3 neighboring 1's. 0
2, 11, 181, 6413, 654033, 167209522, 113592447685, 194907376248498, 879332745226144714, 10237211550601397234033 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A297607.

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A297607.

Sequence in context: A011839 A271507 A217391 * A089760 A288556 A295246

Adjacent sequences:  A297598 A297599 A297600 * A297602 A297603 A297604

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 01 2018

STATUS

approved

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Last modified January 20 08:45 EST 2021. Contains 340301 sequences. (Running on oeis4.)