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A003428 Number of trees by stability index.
(Formerly M0738)
1
0, 0, 0, 0, 0, 0, 2, 3, 5, 12, 22, 47, 94, 201, 417, 907, 1948, 4289, 9440, 21063, 47124, 106377, 240980, 549272, 1256609, 2888057, 6660347, 15416623, 35794121, 83362301 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,7

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

Table of n, a(n) for n=1..30.

D. D. Grant, The stability index of graphs, pp. 29-52 of Combinatorial Mathematics (Proceedings 2nd Australian Conf.), Lect. Notes Math. 403, 1974. Gives first 45 terms.

Index entries for sequences related to trees

CROSSREFS

Sequence in context: A004689 A183364 A124370 * A191626 A030041 A284910

Adjacent sequences:  A003425 A003426 A003427 * A003429 A003430 A003431

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified December 15 09:05 EST 2019. Contains 329995 sequences. (Running on oeis4.)