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A076480 n + mu(rad(n)), where mu is the Moebius-function (A008683) and rad is the squarefree kernel (A007947). 1
2, 1, 2, 3, 4, 7, 6, 7, 8, 11, 10, 13, 12, 15, 16, 15, 16, 19, 18, 21, 22, 23, 22, 25, 24, 27, 26, 29, 28, 29, 30, 31, 34, 35, 36, 37, 36, 39, 40, 41, 40, 41, 42, 45, 46, 47, 46, 49, 48, 51, 52, 53, 52, 55, 56, 57, 58, 59, 58, 59, 60, 63, 64, 63, 66, 65, 66, 69, 70, 69, 70, 73 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
a(n)=n+A076479(n)=n+A008683(A007947(n)).
LINKS
PROG
(PARI) a(n)=n+(-1)^omega(n) \\ Charles R Greathouse IV, Aug 08 2013
CROSSREFS
Sequence in context: A022875 A350404 A325841 * A002730 A081664 A224926
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Oct 14 2002
STATUS
approved

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Last modified May 23 22:02 EDT 2024. Contains 372765 sequences. (Running on oeis4.)