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A007609 Values taken by the sigma(n) function A000203, sorted into ascending order. 14
1, 3, 4, 6, 7, 8, 12, 12, 13, 14, 15, 18, 18, 20, 24, 24, 24, 28, 30, 31, 31, 32, 32, 36, 38, 39, 40, 42, 42, 42, 44, 48, 48, 48, 54, 54, 56, 56, 57, 60, 60, 60, 62, 63, 68, 72, 72, 72, 72, 72, 74, 78, 80, 80, 84, 84, 84, 90, 90, 90, 91, 93, 96, 96, 96, 96, 98, 98 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

COMMENTS

A175192(a(n)) = 1, A054973(a(n)) >= 1. [From Jaroslav Krizek (jaroslav.krizek(AT)atlas.cz), Mar 01 2010]

LINKS

T. D. Noe, Table of n, a(n) for n=1..10000

Walter Nissen, Home Page (listed in lieu of email address)

CROSSREFS

Cf. A002191, A000203.

Cf. A090554.

Sequence in context: A133512 A047515 A066650 * A002191 A108348 A085149

Adjacent sequences:  A007606 A007607 A007608 * A007610 A007611 A007612

KEYWORD

nonn,easy,nice

AUTHOR

Walter Nissen

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Last modified February 15 15:20 EST 2012. Contains 205823 sequences.