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A003466 Number of minimal covers of an n-set.
(Formerly M3117)
+0
1
0, 3, 28, 210, 1506, 10871, 80592, 618939, 4942070, 41076508, 355372524, 3198027157, 29905143464, 290243182755, 2920041395248, 30414515081650 (list; graph; listen)
OFFSET

2,2

REFERENCES

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

Hearne and Wagner, Minimal covers of finite sets, Discr. Math. 5 (1973), 247-251.

CROSSREFS

Sequence in context: A081019 A091120 A045737 this_sequence A092637 A094296 A037777

Adjacent sequences: A003463 A003464 A003465 this_sequence A003467 A003468 A003469

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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