A129318 a(n) = sopfr(A129316(n)), where sopfr(x) is the sum of the prime factors of x, counting multiplicity.

5, 6, 8, 18, 15, 15, 17, 39, 29, 86, 23, 35, 25, 22, 33, 68, 26, 31, 46, 32, 37, 24, 35, 23, 45, 100, 78, 51, 39, 45, 44, 33, 35, 45, 98, 34, 45, 141, 147, 67, 25, 43, 236, 25, 29, 75, 150, 29, 76, 125, 160, 26, 121, 122, 73, 37, 52, 56, 40, 39, 54, 58, 239, 69, 36, 39

Offset: 1

Author

Walter Kehowski, Apr 09 2007, corrected Apr 09 2007

Keywords

• easy
• nonn

Examples

			a(6)=15 since sopfr(A129316(6))=sopfr(160)=sopfr(2^5*5)=15.
		

Links

• Amiram Eldar, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A001414, A006145, A039752, A129316, A129317, A129319, A129320.