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A003437 Number of unlabeled Hamiltonian circuits on n-octahedron.
(Formerly M1781)
2
1, 2, 7, 29, 196, 1788, 21994 (list; graph; refs; listen; history; internal format)
OFFSET

2,2

REFERENCES

D. Singmaster, Hamiltonian circuits on the n-dimensional octahedron. J. Combinatorial Theory Ser. B 19 (1975), no. 1, 1-4.

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

CROSSREFS

See A003436 for labeled case.

Sequence in context: A030824 A030956 A143883 * A192410 A094475 A093034

Adjacent sequences:  A003434 A003435 A003436 * A003438 A003439 A003440

KEYWORD

nonn,nice,more

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 15 23:34 EST 2012. Contains 205860 sequences.