The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
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!)
A221450 Hilltop maps: number of 5Xn binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or antidiagonal neighbor in a random 0..1 5Xn array 1
1, 355, 9829, 230845, 6415089, 177320895, 4832005625, 131942833529, 3606055280657, 98529266203659, 2692051448713949, 73554857285973785, 2009736562063323785, 54911874439751493035, 1500353181134236949205 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Row 5 of A221446
LINKS
EXAMPLE
Some solutions for n=3
..0..1..1....0..1..0....1..1..0....1..0..1....1..1..0....0..1..0....1..1..1
..1..1..0....0..0..0....0..1..0....0..1..0....1..1..0....0..1..1....1..0..0
..1..1..0....1..1..1....0..1..0....0..0..1....1..1..1....0..0..0....1..1..1
..1..1..1....0..1..0....1..1..1....1..1..1....0..0..1....1..1..0....1..1..1
..1..0..1....0..0..1....1..0..1....0..0..1....1..1..0....1..0..1....1..1..1
CROSSREFS
Sequence in context: A250157 A293563 A241960 * A232298 A108375 A237466
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 May 24 06:10 EDT 2024. Contains 372772 sequences. (Running on oeis4.)