Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A038054
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A038054 Number of labeled trees with 2-colored leaves. +0
3
1, 2, 4, 12, 80, 800, 10752, 181888, 3714048, 88915968, 2442936320, 75776712704, 2619618852864, 99879826948096, 4163954627051520, 188441538173337600, 9200521811924615168, 482067547423055544320, 26980938272912248406016 (list; graph; listen)
OFFSET

0,2
LINKS

Index entries for sequences related to trees

FORMULA

(A038049+A038053)/n.

CROSSREFS

Cf. A036251.

Sequence in context: A060935 A141522 A114903 this_sequence A003180 A002080 A001206

Adjacent sequences: A038051 A038052 A038053 this_sequence A038055 A038056 A038057

KEYWORD

nonn

AUTHOR

Christian G. Bower (bowerc(AT)usa.net), Jan 04 1999.

page 1

Search completed in 0.002 seconds

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

AT&T Labs Research

Legal Notice
© 2009 AT&T Intellectual Property. All Rights Reserved.