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A293242 Number of matchings in the n-permutation star graph. 0
1, 2, 18, 1157484 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

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

Eric Weisstein's World of Mathematics, Independent Edge Set

Eric Weisstein's World of Mathematics, Matching

Eric Weisstein's World of Mathematics, Permutation Star Graph

CROSSREFS

Sequence in context: A120929 A007184 A067765 * A321339 A086367 A321340

Adjacent sequences:  A293239 A293240 A293241 * A293243 A293244 A293245

KEYWORD

nonn,more

AUTHOR

Eric W. Weisstein, Oct 03 2017

STATUS

approved

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Last modified August 18 08:57 EDT 2019. Contains 326077 sequences. (Running on oeis4.)