1,2

Prime factors counted with multiplicity. - Harvey P. Dale, Sep 13 2016

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

a(2)=3 because 3+5=8=2*2*2;

a(3)=2 because 3+5+7=15=3*5.

PrimeOmega[Accumulate[Prime[Range[2, 110]]]] (* Harvey P. Dale, Sep 13 2016 *)

(PARI) for(n=1, 105, print1(bigomega(sum(k=1, n, prime(k+1))), ", ")) (Shepherd)

Sequence in context: A104890 A064123 A024703 * A064126 A175333 A130845

Adjacent sequences: A102842 A102843 A102844 * A102846 A102847 A102848

easy,nonn

Giovanni Teofilatto, Feb 28 2005

More terms from Rick L. Shepherd, May 18 2005

approved