A076480 n + mu(rad(n)), where mu is the Moebius-function (A008683) and rad is the squarefree kernel (A007947).

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

Offset

1,1

Comments

a(n)=n+A076479(n)=n+A008683(A007947(n)).

Links

Table of n, a(n) for n=1..72.

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

Adjacent sequences: A076477 A076478 A076479 * A076481 A076482 A076483

Keyword

nonn

Author

Reinhard Zumkeller, Oct 14 2002

Status

approved