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A006404 Number of 2-connected maps without faces of degree 2.
(Formerly M1385)
0
1, 1, 2, 5, 10, 29, 96, 339 (list; graph; refs; listen; history; internal format)
OFFSET

3,3

REFERENCES

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

Walsh, T. R. S.; Generating nonisomorphic maps without storing them. SIAM J. Algebraic Discrete Methods 4 (1983), no. 2, 161-178.

CROSSREFS

Sequence in context: A075885 A018377 A056363 * A101957 A047113 A155580

Adjacent sequences:  A006401 A006402 A006403 * A006405 A006406 A006407

KEYWORD

nonn

AUTHOR

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

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Last modified February 15 20:26 EST 2012. Contains 205852 sequences.