A292991 Number of independent vertex sets and vertex covers in the n-permutation star graph.

2, 3, 18, 35219

Offset

1,1

Links

Table of n, a(n) for n=1..4.

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

Adjacent sequences: A292988 A292989 A292990 * A292992 A292993 A292994

Keyword

nonn,more

Author

Eric W. Weisstein, Sep 27 2017

Status

approved