A152092 - OEIS

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A152092

Smallest number m such that sigma(m) is an n-almost prime.

5

2, 3, 6, 14, 21, 42, 93, 186, 381, 651, 1302, 2667, 5334, 11811, 23622, 49146, 82677, 165354, 344022, 761763, 1523526, 2752491, 5332341, 10664682, 21845397, 43690794, 85327221, 170654442, 341310837, 677207307, 1354414614, 2796546858, 6192353757, 10836557067

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..34.

EXAMPLE

a(32) = 2796546858. Sigma(2796546858) = 6442450944 = 2^31*3^1 (32-almost prime).

CROSSREFS

Sequence in context: A282351 A193093 A182756 * A187033 A087293 A250022

Adjacent sequences: A152089 A152090 A152091 * A152093 A152094 A152095

KEYWORD

nonn

AUTHOR

Donovan Johnson, Nov 24 2008

EXTENSIONS

a(33)-a(34) from Donovan Johnson, Jul 25 2012

STATUS

approved