A133016 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A133016

Even imperfect numbers, divided by 2.

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