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A075656
n + product of prime factors of n.
1
1, 4, 6, 6, 10, 12, 14, 10, 12, 20, 22, 18, 26, 28, 30, 18, 34, 24, 38, 30, 42, 44, 46, 30, 30, 52, 30, 42, 58, 60, 62, 34, 66, 68, 70, 42, 74, 76, 78, 50, 82, 84, 86, 66, 60, 92, 94, 54, 56, 60, 102, 78, 106, 60, 110, 70, 114, 116, 118, 90, 122, 124, 84, 66, 130, 132
OFFSET
1,2
COMMENTS
Prime factors taken without multiplicity. - Harvey P. Dale, Feb 27 2021
LINKS
FORMULA
a(n)=A073353(n), n>1. [From R. J. Mathar, Sep 23 2008]
EXAMPLE
6 + product of prime factors of 6 = 6 + 2 * 3 = 12, so a(6) = 12.
MATHEMATICA
Flatten[Append[{1}, Table[n + Apply[Times, Transpose[FactorInteger[n]][[1]]], {n, 2, 100}]]]
Join[{1}, Table[n+Times@@FactorInteger[n][[All, 1]], {n, 2, 70}]] (* Harvey P. Dale, Feb 27 2021 *)
CROSSREFS
Sequence in context: A163173 A058640 A075653 * A267573 A345282 A369749
KEYWORD
easy,nonn
AUTHOR
Joseph L. Pe, Oct 12 2002
STATUS
approved