1,1

Harvey P. Dale, Table of n, a(n) for n = 1..1000

seq( A007953(A001358(n)), n=1..120) ; # R. J. Mathar, Aug 12 2010

Total[IntegerDigits[#]]&/@Select[Range[300], PrimeOmega[#]==2&] (* Harvey P. Dale, Jun 12 2012 *)

Cf. A001358.

Sequence in context: A154521 A129112 A239634 * A210616 A238167 A307036

Adjacent sequences: A175010 A175011 A175012 * A175014 A175015 A175016

nonn,base

Juri-Stepan Gerasimov, Apr 04 2010

Entries checked by R. J. Mathar, Aug 12 2010

approved