login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A302894 Number of 7Xn 0..1 arrays with every element equal to 0, 2, 3, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1
64, 21, 8968, 28594, 2059835, 60501563, 2899297652, 133518102376, 6327934680000, 307776560940205, 14923956123066383, 730433298641263668, 35734411310196784099, 1751985608336100700720, 85921025124831969145232 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A302889.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

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

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

CROSSREFS

Cf. A302889.

Sequence in context: A303247 A302373 A303089 * A303629 A302520 A302685

Adjacent sequences:  A302891 A302892 A302893 * A302895 A302896 A302897

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 15 2018

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified February 26 17:19 EST 2020. Contains 332293 sequences. (Running on oeis4.)