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A005979 Number of Hamiltonian rooted triangulations with n internal nodes.
(Formerly M4000)
0
5, 45, 420, 4130, 42480, 453350, 4986860, 56251230, 648055650, 7601584050, 90556803600 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

REFERENCES

P. N. Rathie, The enumeration of Hamiltonian polygons in rooted planar triangulations, Discrete Math., 6 (1973), 163-168.

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

CROSSREFS

Sequence in context: A173558 A022022 A058410 * A165225 A121272 A054318

Adjacent sequences:  A005976 A005977 A005978 * A005980 A005981 A005982

KEYWORD

nonn

AUTHOR

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

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Last modified February 16 02:51 EST 2012. Contains 205860 sequences.