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!)
A231970 Number of (n+1)X(n+1) 0..1 arrays with no element having a strict majority of its horizontal and vertical neighbors equal to one 1
9, 56, 841, 43983, 6507601, 2641967397, 3036560660329, 9981109155098235, 93538123901225727364, 2480246214908598898309094, 186787722909431013956841219409, 39975590681225962593258073864460074 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A231977

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..15

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A274553 A221801 A131468 * A197530 A086888 A231315

Adjacent sequences:  A231967 A231968 A231969 * A231971 A231972 A231973

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 16 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 18 17:18 EST 2022. Contains 350455 sequences. (Running on oeis4.)