%I #7 Sep 06 2019 17:16:26
%S 4,11,17,23,30,34,42,50,54,58,67,73,78,85,95,99,103,111,117,124,128,
%T 140,143,151,157,163,174,174,183,187,197,210,207,217,222,229,235,244,
%U 251,256,261,270,276,285,293,298,304,311,318,327,331,334,347,352,362,366
%N Sum of the number of prime divisors including repetitions between n^2 and (n+1)^2.
%H Amiram Eldar, <a href="/A160907/b160907.txt">Table of n, a(n) for n = 1..10000</a>
%e Between 1^2 and 2^2 we have 0,1,1,2 which sum to 4, so a(1)=4.
%e Between 2^2 and 3^2 we have 2,1,2,1,3,2 which sum to 11, so a(2)=11.
%t f[n_]:=If[n==1,0,Plus@@Last/@FactorInteger[n]]; Table[Sum[f[j],{j,i^2,(i+1)^2}],{i,60}] (* _Ray Chandler_, May 06 2010 *)
%Y Cf. A001222.
%K easy,nonn
%O 1,1
%A _Daniel Tisdale_, May 29 2009
%E Edited and extended by _Ray Chandler_, May 06 2010