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A175878 Odd terms in A007497. 2
3, 7, 15, 564210119465811 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..4.

MATHEMATICA

n=2; Do[If[OddQ[n=DivisorSigma[1, n]], Print[n]], {k, 2, 99}]

CROSSREFS

A007497, A175877.

Sequence in context: A197594 A206851 A033089 * A180503 A153578 A018852

Adjacent sequences:  A175875 A175876 A175877 * A175879 A175880 A175881

KEYWORD

more,nonn

AUTHOR

Zak Seidov, Oct 07 2010

STATUS

approved

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Last modified May 15 02:21 EDT 2021. Contains 343909 sequences. (Running on oeis4.)