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A129348 Number of (directed) Hamiltonian circuits in the cocktail party graph of order n. 1
0, 2, 32, 1488, 112512, 12771840, 2036229120, 434469611520, 119619533537280, 41303040523960320, 17481826772405452800, 8902337068174698086400, 5370014079716477003366400, 3786918976243761421064601600, 3087031512410698159166482022400, 2880726660365605475506018320384000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Max Alekseyev, Table of n, a(n) for n = 1..40

Eric Weisstein's World of Mathematics, Cocktail Party Graph

Eric Weisstein's World of Mathematics, Hamiltonian Cycle

CROSSREFS

Sequence in context: A012140 A012209 A172286 * A087084 A193269 A088386

Adjacent sequences:  A129345 A129346 A129347 * A129349 A129350 A129351

KEYWORD

nonn

AUTHOR

Eric W. Weisstein, Apr 10, 2007

STATUS

approved

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Last modified May 25 17:26 EDT 2013. Contains 225647 sequences.