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A292991
Number of independent vertex sets and vertex covers in the n-permutation star graph.
0
2, 3, 18, 35219
OFFSET
1,1
LINKS
Eric Weisstein's World of Mathematics, Independent Vertex Set
Eric Weisstein's World of Mathematics, Permutation Star Graph
Eric Weisstein's World of Mathematics, Vertex Cover
CROSSREFS
Sequence in context: A073983 A230602 A269343 * A139319 A269251 A092925
KEYWORD
nonn,more,changed
AUTHOR
Eric W. Weisstein, Sep 27 2017
STATUS
approved