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A003427 Number of trees by stability index.
(Formerly M1134)
0
0, 0, 0, 0, 1, 1, 1, 2, 4, 8, 16, 34, 72, 158, 348, 784, 1777, 4080, 9425, 21965, 51456, 121300, 287215, 683268, 1631532, 3910235, 9401000, 22670058, 54813780, 132867903 (list; graph; refs; listen; history; internal format)
OFFSET

1,8

REFERENCES

D. D. Grant, The stability index of graphs, pp. 29-52 of Combinatorial Mathematics (Proceedings 2nd Australian Conf.), Lect. Notes Math. 403, 1974.

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

LINKS

Index entries for sequences related to trees

CROSSREFS

Sequence in context: A006210 A096812 A006981 * A045648 A166354 A180207

Adjacent sequences:  A003424 A003425 A003426 * A003428 A003429 A003430

KEYWORD

nonn

AUTHOR

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

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Last modified February 15 03:33 EST 2012. Contains 205694 sequences.