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A051240 Number of 4-uniform hypergraphs on n unlabeled nodes, or equivalently pure 3-dimensional simplicial complexes on n unlabeled nodes.
(Formerly M1723)
4
1, 1, 1, 2, 6, 156, 7013320, 29281354514767168, 234431745534048922731115555415680, 453456943706240925312368435237969462391555337386758635520 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

REFERENCES

V. Jovovic, On the number of m-place relations (in Russian), Logiko-algebraicheskie konstruktsii, Tver, 1992, 59-66.

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

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

E. M. Palmer, On the number of n-plexes, Discrete Math., 6 (1973), 377-390. [The numbers are incorrect]

CROSSREFS

Cf. A000665, A092337.

Sequence in context: A088430 A246958 A219761 * A003189 A281819 A199482

Adjacent sequences:  A051237 A051238 A051239 * A051241 A051242 A051243

KEYWORD

nonn,nice

AUTHOR

Vladeta Jovovic

STATUS

approved

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Last modified November 18 07:01 EST 2018. Contains 317279 sequences. (Running on oeis4.)