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!)
A223891 Number of nX4 0..2 arrays with row sums and column sums unimodal 1
46, 3298, 187103, 8878492, 367772497, 13710418065, 469842794992, 15032271992980, 454296896353698, 13086457136814204, 361878926424024255, 9661547783502821964, 250204578633128649051, 6309270603849297385833 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A223892

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..15

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A201234 A025763 A223884 * A243648 A302114 A159380

Adjacent sequences:  A223888 A223889 A223890 * A223892 A223893 A223894

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 28 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 August 19 23:59 EDT 2022. Contains 356231 sequences. (Running on oeis4.)