A152092 Smallest number m such that sigma(m) is an n-almost prime.

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

Offset: 1

Author

Donovan Johnson, Nov 24 2008

Keywords

• nonn

Examples

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

Crossrefs

Cf. A000203.

Extensions

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