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A116652 Number of connected subgroups of the alternating group A_n. +0
3
0, 1, 0, 1, 5, 23, 257, 1048, 27219, 137537, 2725441, 22377824, 1221555748, 7846888669 (list; graph; listen)
OFFSET

0,5

COMMENT

A permutation group is connected if it is not the direct product of smaller permutation groups.

LINKS

N. J. A. Sloane, Transforms

FORMULA

Logarithmic transform of A029725.

CROSSREFS

Labeled version of A116653.

Sequence in context: A116151 A156187 A156555 this_sequence A072104 A086797 A023275

Adjacent sequences: A116649 A116650 A116651 this_sequence A116653 A116654 A116655

KEYWORD

nonn,hard

AUTHOR

Christian G. Bower (bowerc(AT)usa.net), Feb 23 2006

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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