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A138884 Numbers that are not even superperfect numbers. 0
1, 3, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 65 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Also, numbers that are not superperfect numbers A019279, if there are no odd superperfect numbers.

LINKS

Table of n, a(n) for n=1..61.

CROSSREFS

Even superperfect numbers: A061652. Cf. A019279, A132999, A133398.

Sequence in context: A005527 A285173 A009005 * A008521 A299489 A039231

Adjacent sequences:  A138881 A138882 A138883 * A138885 A138886 A138887

KEYWORD

nonn

AUTHOR

Omar E. Pol, Apr 06 2008

STATUS

approved

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Last modified July 5 04:30 EDT 2020. Contains 335459 sequences. (Running on oeis4.)