login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A223004 Number of 5Xn 0..2 arrays with no more than floor(5Xn/2) elements equal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order 0
41, 2894, 184475, 21692365, 1388632315, 182298485349, 12067682881753, 1638508895884566, 110552151586138768 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 5 of A223000

LINKS

Table of n, a(n) for n=1..9.

EXAMPLE

Some solutions for n=3

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

..0..2..0....0..1..2....2..1..0....0..2..0....2..1..0....1..2..0....1..2..0

..0..2..0....2..1..0....2..1..0....0..2..1....2..2..2....0..1..0....0..2..2

..0..2..0....1..1..2....0..0..0....0..0..1....0..0..1....0..2..0....2..2..1

..1..1..1....2..0..1....1..1..2....1..2..2....1..2..1....1..1..0....1..0..1

CROSSREFS

Sequence in context: A211907 A291860 A193124 * A275093 A275349 A215826

Adjacent sequences:  A223001 A223002 A223003 * A223005 A223006 A223007

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 11 2013

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 January 24 13:11 EST 2022. Contains 350538 sequences. (Running on oeis4.)