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Search: id:A007905
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A007905 Conflicts during insertions into exchange trees on n nodes. +0
1
0, 0, 1, 4, 30, 216, 1440, 11040, 112560, 1229760 (list; graph; listen)
OFFSET

0,4

LINKS

Index entries for sequences related to trees

MAPLE

a_n=a_{\lfloor \frac{n}{2}\rfloor}+a_{\lfloor \frac{n-1}{2}rfloor}+\frac{n-1}{n}.

CROSSREFS

Sequence in context: A113450 A094567 A134093 this_sequence A084976 A000313 A082144

Adjacent sequences: A007902 A007903 A007904 this_sequence A007906 A007907 A007908

KEYWORD

nonn

AUTHOR

Markus Nebel [ nebel(AT)sads.informatik.uni-frankfurt.de ]

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Last modified July 4 01:34 EDT 2008. Contains 140787 sequences.


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