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Search: id:A020490
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A020490 phi(n) <= sigma_0(n). +0
2
1, 2, 3, 4, 6, 8, 10, 12, 18, 24, 30 (list; graph; listen)
OFFSET

1,2
CROSSREFS

Sequence in context: A034287 A067128 A120432 this_sequence A014875 A029469 A061953

Adjacent sequences: A020487 A020488 A020489 this_sequence A020491 A020492 A020493

KEYWORD

nonn,fini,full

AUTHOR

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

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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