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A162906 n-A081707(n). 1
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 (list; graph; refs; listen; history; text; internal format)
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: A076332 A245092 A092601 * A100476 A248517 A007896

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

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Last modified March 30 20:18 EDT 2017. Contains 284302 sequences.