A162906 a(n) = n - A081707(n).

0, 1, 2, 3, 4, 4, 6, 7, 8, 8, 10, 9, 12, 12, 13, 15, 16, 15, 18, 17, 19, 20, 22, 20, 24, 24, 26, 25, 28, 25, 30, 31, 31, 32, 33, 31, 36, 36, 37, 36, 40, 37, 42, 41, 42, 44, 46, 43, 48, 47, 49, 49, 52, 50, 53, 52, 55, 56, 58, 52, 60, 60, 60, 63, 63, 61, 66, 65, 67, 65, 70, 65, 72, 72, 72

Offset

1,3

Links

Table of n, a(n) for n=1..75.

Formula

a(n) = A000027(n) - A081707(n) = n + A001222(n) - A000005(n).

Example

a(1)=1-1. a(2)=2-1. a(3)=3-1. a(4)=4-1. a(5)=5-1. a(6)=6-2.

Maple

A081707 := proc(n) numtheory[tau](n)-numtheory[bigomega](n) ; end: A162906 := proc(n) n - A081707(n) ; end: seq(A162906(n), n=1..100) ; # R. J. Mathar, Jul 21 2009

Crossrefs

Cf. A000027, A069345, A081707.

Sequence in context: A342126 A092601 A353705 * A356397 A350656 A100476

Adjacent sequences: A162903 A162904 A162905 * A162907 A162908 A162909

Keyword

nonn,easy

Author

Juri-Stepan Gerasimov, Jul 17 2009

Extensions

Duplicate of 9 removed by R. J. Mathar, Jul 21 2009

Status

approved