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Search: id:A020489
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A020489 phi(n) divides sigma_0(n). +0
1
1, 2, 3, 6, 8, 10, 18, 24, 30 (list; graph; listen)
OFFSET

1,2
CROSSREFS

Sequence in context: A082667 A098162 A076627 this_sequence A002240 A099798 A097383

Adjacent sequences: A020486 A020487 A020488 this_sequence A020490 A020491 A020492

KEYWORD

nonn,fini,full

AUTHOR

David W. Wilson (davidwwilson(AT)comcast.net)

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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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