login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A219690 Number of 6Xn 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 6Xn array 1
21, 60, 655, 5726, 44816, 344926, 2709320, 21474269, 167685059, 1273322836, 9386203438, 67340577300, 471427290355, 3224592437317, 21562151377146, 141010883018273, 902366368908706, 5653483899077449, 34695071833947322 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 6 of A219686

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..41

EXAMPLE

Some solutions for n=3

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

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

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

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

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

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

CROSSREFS

Sequence in context: A223467 A051873 A223460 * A325319 A069133 A124714

Adjacent sequences:  A219687 A219688 A219689 * A219691 A219692 A219693

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 November 21 09:14 EST 2019. Contains 329362 sequences. (Running on oeis4.)