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A263862 Triangle read by rows: T(n,k) (n>=0, k>=n+1) is the number of posets with n elements and whose chain polytope has k facets. 0
1, 1, 1, 1, 1, 3, 1, 1, 7, 6, 2, 1, 13, 25, 18, 4, 2, 1, 22, 80, 111, 60, 32, 7, 4, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,6

COMMENTS

Row sums give A000112.

Is this the same as A263858? - R. J. Mathar, Nov 03 2015

LINKS

Table of n, a(n) for n=0..25.

FindStat - Combinatorial Statistic Finder, The number of facets in the chain polytope of the poset.

EXAMPLE

Triangle begins:

1,

1,

1,1,

1,3,1,

1,7,6,2,

1,13,25,18,4,2,

1,22,80,111,60,32,7,4,1,

...

CROSSREFS

Cf. A000112.

Sequence in context: A193387 A185982 A263858 * A263861 A133800 A146900

Adjacent sequences:  A263859 A263860 A263861 * A263863 A263864 A263865

KEYWORD

nonn,tabf,more

AUTHOR

Christian Stump, Oct 28 2015

STATUS

approved

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Last modified September 29 00:44 EDT 2022. Contains 357081 sequences. (Running on oeis4.)