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A293094 Number of n X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 two less than the number of 0's adjacent to some 1. 0
0, 0, 48, 8088, 3125547, 5589631828, 38469698642410, 1110306381675662688 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Diagonal of A293100.

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A293100.

Sequence in context: A130417 A299943 A226257 * A233199 A232160 A260212

Adjacent sequences:  A293091 A293092 A293093 * A293095 A293096 A293097

KEYWORD

nonn

AUTHOR

R. H. Hardin, Sep 30 2017

STATUS

approved

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Last modified January 20 21:46 EST 2022. Contains 350472 sequences. (Running on oeis4.)