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A133016 Even imperfect numbers, divided by 2. 0
1, 2, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 15, 16, 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, 64 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..62.

CROSSREFS

Cf. A005843, A014335, A014445, A014494, A026503, A028334. Imperfect numbers: A132999.

Sequence in context: A162880 A083792 A083794 * A026503 A235498 A052405

Adjacent sequences:  A133013 A133014 A133015 * A133017 A133018 A133019

KEYWORD

easy,nonn

AUTHOR

Omar E. Pol, Oct 20 2007

STATUS

approved

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Last modified January 28 00:32 EST 2020. Contains 331313 sequences. (Running on oeis4.)