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A307935
Number of (undirected) Hamiltonian paths in the n-cocktail party graph.
1
0, 4, 120, 6912, 631680, 84211200, 15432560640, 3722677862400, 1143584003358720, 435902085306777600, 201889940373209088000, 111673403387053395148800, 72713691524377589317632000, 55052849030095232395798118400, 47957058157063329359371173888000
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OFFSET
1,2
LINKS
Table of n, a(n) for n=1..15.
Eric Weisstein's World of Mathematics,
Cocktail Party Graph
Eric Weisstein's World of Mathematics,
Hamiltonian Path
FORMULA
a(n) =
A007060
(n)/2.
CROSSREFS
Cf.
A007060
.
Sequence in context:
A002702
A068204
A203033
*
A001332
A071304
A213957
Adjacent sequences:
A307932
A307933
A307934
*
A307936
A307937
A307938
KEYWORD
nonn
,
easy
AUTHOR
Eric W. Weisstein
, May 06 2019
STATUS
approved
