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A005027 Number of trivalent maps.
(Formerly M1294)
1
1, 2, 4, 16, 63, 328, 1933, 12653 (list; graph; refs; listen; history; internal format)
OFFSET

3,2

REFERENCES

C. F. Earl and L. J. March, Architectural applications of graph theory, pp. 327-355 of R. J. Wilson and L. W. Beineke, editors, Applications of Graph Theory. Academic Press, NY, 1979.

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

CROSSREFS

Antidiagonal sums of array in A169808.

Sequence in context: A152876 A153963 A153960 * A153969 A153966 A138867

Adjacent sequences:  A005024 A005025 A005026 * A005028 A005029 A005030

KEYWORD

nonn

AUTHOR

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

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Last modified February 16 12:41 EST 2012. Contains 205909 sequences.