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A134665 Highest power of 2 dividing the n-th multiply perfect number A007691. 2
0, 1, 2, 3, 4, 5, 6, 5, 3, 9, 2, 9, 12, 7, 9, 8, 8, 13, 16, 7, 7, 10, 14, 13, 18, 14, 13, 11, 5, 10, 10, 8, 11, 11, 7, 7, 14, 15, 5, 9, 30, 11, 8, 17, 15, 11, 11, 14, 20, 20, 20, 15, 21, 19, 25, 19, 15, 17, 17, 17, 22, 25, 20, 25, 19, 19, 19, 27, 19, 19, 27, 17, 19, 27, 19, 21, 23, 20 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

The large terms, for example at n=41, correspond to the perfect numbers A000396 in A007691. See A134666 for the number of multiply perfect numbers having a given highest exponent of 2.

LINKS

T. D. Noe, Table of n, a(n) for n=1..5000 (using Flammenkamp's data)

Achim Flammenkamp, The Multiply Perfect Numbers Page

CROSSREFS

Sequence in context: A097751 A070667 A122416 * A063260 A232240 A073793

Adjacent sequences:  A134662 A134663 A134664 * A134666 A134667 A134668

KEYWORD

nonn

AUTHOR

T. D. Noe, Nov 05 2007

STATUS

approved

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Last modified April 18 05:19 EDT 2014. Contains 240688 sequences.