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A175878
Odd terms in
A007497
.
2
3, 7, 15, 564210119465811
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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:
A206851
A033089
A370661
*
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 April 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)