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

0,5

COMMENTS

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

LINKS

Table of n, a(n) for n=0..13.

N. J. A. Sloane, Transforms

FORMULA

Logarithmic transform of A029725.

CROSSREFS

Labeled version of A116653.

Sequence in context: A295080 A323993 A156555 * A197936 A198029 A072104

Adjacent sequences:  A116649 A116650 A116651 * A116653 A116654 A116655

KEYWORD

nonn,hard

AUTHOR

Christian G. Bower, Feb 23 2006

STATUS

approved

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Last modified October 19 21:17 EDT 2019. Contains 328229 sequences. (Running on oeis4.)