A003427 Number of trees by stability index. (Formerly M1134)

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

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

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: A288176 A096812 A006981 * A333647 A045648 A248890

Adjacent sequences: A003424 A003425 A003426 * A003428 A003429 A003430

Keyword

nonn,more

Author

N. J. A. Sloane

Status

approved