A003428 Number of trees by stability index. (Formerly M0738)

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

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 A331811

Adjacent sequences: A003425 A003426 A003427 * A003429 A003430 A003431

Keyword

nonn,more

Author

N. J. A. Sloane

Status

approved