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!)
A219304 Unchanging value maps: number of n X n binary arrays indicating the locations of corresponding elements unequal to no horizontal or vertical neighbor in a random 0..2 n X n array 0
1, 6, 90, 3334, 326444, 89981627, 68906619754, 144049729095880 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Diagonal of A219310

LINKS

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

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A013297 A232979 A218758 * A305324 A265088 A077370

Adjacent sequences: A219301 A219302 A219303 * A219305 A219306 A219307

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 17 2012

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified February 1 05:08 EST 2023. Contains 359981 sequences. (Running on oeis4.)