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A001852 Total diameter of labeled trees with n nodes.
(Formerly M4247 N1774)
0
0, 1, 6, 44, 430, 5322, 79184, 1381144 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

REFERENCES

J. Riordan, Enumeration of trees by height and diameter, IBM J. Res. Dev. 4 (1960), 473-478.

N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

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..8.

Index entries for sequences related to trees

CROSSREFS

Sequence in context: A203159 A124996 A226045 * A194928 A065783 A158460

Adjacent sequences:  A001849 A001850 A001851 * A001853 A001854 A001855

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified April 17 18:00 EDT 2014. Contains 240655 sequences.