A086052 Sum of first n 6-almost primes.

64, 160, 304, 464, 680, 904, 1144, 1468, 1804, 2156, 2516, 2916, 3332, 3818, 4322, 4850, 5390, 5934, 6494, 7094, 7702, 8326, 9055, 9791, 10547, 11331, 12123, 12933, 13749, 14589, 15469, 16369, 17281, 18209, 19145, 20137, 21137, 22177, 23281

Offset: 1

Author

Shyam Sunder Gupta, Aug 24 2003

Keywords

• easy
• nonn

Comments

The first two elements in this sequence are themselves 6-almost primes. a(1) = 64 = 2^6. a(2) = 160 = 2^5 * 5. - Jonathan Vos Post, Dec 11 2004

Examples

			a(2)=160 because sum of first two 6-almost primes, i.e. 64+96, is 160.
		

Links

• Robert Israel, Table of n, a(n) for n = 1..10000

Crossrefs

Partial sums of A046306.

Programs

Maple

ListTools:-PartialSums(select(numtheory:-bigomega=6, [$1..2000])); # Robert Israel, Jun 28 2019

Mathematica

Accumulate[Select[Range[1500],PrimeOmega[#]==6&]] (* Harvey P. Dale, May 15 2013 *)