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A098189 A034448(n)-A000010(n), sum-of-unitary-divisors minus Euler-phi. +0
7
0, 2, 2, 3, 2, 10, 2, 5, 4, 14, 2, 16, 2, 18, 16, 9, 2, 24, 2, 22, 20, 26, 2, 28, 6, 30, 10, 28, 2, 64, 2, 17, 28, 38, 24, 38, 2, 42, 32, 38, 2, 84, 2, 40, 36, 50, 2, 52, 8, 58, 40, 46, 2, 66, 32, 48, 44, 62, 2, 104, 2, 66, 44, 33, 36, 124, 2, 58, 52, 120, 2, 66, 2, 78, 64, 64, 36, 144, 2 (list; graph; listen)
OFFSET

1,2

FORMULA

a(n)>A063919(n) if n>1.

a(A000040(k))=2.

EXAMPLE

a(1)=1-1=0.

CROSSREFS

Cf. A034448, A000010, A063919, A098190-A098195.

Sequence in context: A069138 A058671 A016002 this_sequence A162733 A016003 A087139

Adjacent sequences: A098186 A098187 A098188 this_sequence A098190 A098191 A098192

KEYWORD

nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu), Sep 03 2004

EXTENSIONS

Edited by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Mar 02 2009

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Last modified December 17 13:29 EST 2009. Contains 170826 sequences.


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