login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A219691 Number of 7Xn arrays of the minimum value of corresponding elements and their horizontal, vertical or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..2 7Xn array 0
28, 98, 1506, 18486, 220182, 2706117, 35011623, 461414270, 5979059010, 75005582670 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A219686

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

Some solutions for n=3

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A233374 A231230 A233375 * A212777 A130281 A255218

Adjacent sequences:  A219688 A219689 A219690 * A219692 A219693 A219694

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 25 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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 14 10:47 EDT 2020. Contains 336480 sequences. (Running on oeis4.)