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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Prime factors taken without multiplicity. - Harvey P. Dale, Feb 27 2021

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..1000

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 A193814

Adjacent sequences:  A075653 A075654 A075655 * A075657 A075658 A075659

KEYWORD

easy,nonn

AUTHOR

Joseph L. Pe, Oct 12 2002

STATUS

approved

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Last modified June 30 06:00 EDT 2022. Contains 354914 sequences. (Running on oeis4.)