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A283633 Number of nX7 0..1 arrays with no 1 equal to more than one of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements. 1
13, 2076, 127635, 6345928, 272974255, 10666178322, 392539665568, 13797245749346, 468742166961530, 15502521715119538, 501795715376231851, 15957781722597713676, 500040694917490469472, 15473893797643876157146 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A283634.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Cf. A283634.

Sequence in context: A196801 A196589 A197046 * A221823 A075601 A325216

Adjacent sequences: A283630 A283631 A283632 * A283634 A283635 A283636

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 12 2017

STATUS

approved

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Last modified November 28 12:20 EST 2022. Contains 358416 sequences. (Running on oeis4.)