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A052315 M-type rooted trees on n nodes. 1
1, 4, 17, 83, 432, 2416, 14093, 85188, 528234, 3343420, 21508182, 140225532, 924444270, 6152191399, 41275242100, 278865583963, 1895686831203, 12956648332412, 88984197144487, 613773294727307, 4250024962493357 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

REFERENCES

F. Bergeron, G. Labelle and P. Leroux, Combinatorial Species and Tree-Like Structures, Cambridge, 1998, p. 210 (3.2.68)

LINKS

Index entries for sequences related to rooted trees

N. J. A. Sloane, Transforms

FORMULA

Satisfies 2*a(n)=PSum(SHIFT_RIGHT(a)+EULER(a))-c0. c0(0)=1. c0(k)=0 if k != 0.

CROSSREFS

Cf. A006959.

Sequence in context: A181517 A110771 A082028 * A200716 A093904 A093344

Adjacent sequences:  A052312 A052313 A052314 * A052316 A052317 A052318

KEYWORD

nonn,eigen

AUTHOR

Christian G. Bower (bowerc(AT)usa.net), Dec 15 1999.

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Last modified February 15 21:00 EST 2012. Contains 205852 sequences.