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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A138571 Arises in saturation points of a rational polyhedral cone. 0
16, 120, 560, 1796, 4064, 6440, 6956, 4898, 2104, 492, 48 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

REFERENCES

Akimichi Takemura and Ruriko Yoshida, Saturation points on faces of a rational polyhedral cone, in Integer Points in Polyhedra -- Geometry, Number Theory, Representation Theory, Algebra, Optimization, Statistics; Contemporary Mathematics 452, American mathematical Society, 2008, pp.147-161.

LINKS

Akimichi Takemura and Ruriko Yoshida, Saturation points on faces of a rational polyhedral cone

EXAMPLE

Table 1 of Takemura and Yoshida: Faces for 2 x 2 x 2 x 2 tables with three 2-marginals and a 3-marginal. The first column represents the dimension of faces, the second column represents the number of faces, the third column represents the number of nowhere saturated faces and the fourth column represents the number of almost saturated faces.

====================================================

Dimension.|.# of faces.|.# of nowhere.|.# of almost|

----------------------------------------------------

...11....|.....48.....|.......0......|.....48.....|

...10....|....492.....|.......0......|....492.....|

....9....|...2104.....|.......0......|...2104.....|

....8....|...4898.....|.......2......|...4896.....|

....7....|...6956.....|......16......|...6940.....|

....6....|...6440.....|......56......|...6384.....|

....5....|...4064.....|.....112......|...3952.....|

....4....|...1796.....|.....140......|...1656.....|

....3....|....560.....|.....112......|....448.....|

....2....|....120.....|......56......|.....64.....|

....1....|.....16.....|......16......|......0.....|

====================================================

CROSSREFS

Sequence in context: A200173 A093740 A190049 * A047641 A010932 A014805

Adjacent sequences:  A138568 A138569 A138570 * A138572 A138573 A138574

KEYWORD

nonn

AUTHOR

Jonathan Vos Post (jvospost3(AT)gmail.com), May 12 2008

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 17 11:30 EST 2012. Contains 206011 sequences.