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!)
A221451 Hilltop maps: number of 6Xn binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or antidiagonal neighbor in a random 0..1 6Xn array 1
1, 1201, 65569, 2897357, 157933741, 8569227073, 456064257841, 24333809830873, 1300168164767193, 69442977248777937, 3708745793506329473, 198080464024573391557, 10579291552464655635125, 565028486364173641870457 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row 6 of A221446

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..65

EXAMPLE

Some solutions for n=3

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

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

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

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

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

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

CROSSREFS

Sequence in context: A020390 A156620 A214116 * A133142 A068534 A252340

Adjacent sequences: A221448 A221449 A221450 * A221452 A221453 A221454

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 17 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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified February 4 12:52 EST 2023. Contains 360055 sequences. (Running on oeis4.)