This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A325034 #6 Mar 26 2019 21:05:37
%S A325034 0,1,1,2,2,2,1,3,2,3,3,3,2,2,3,4,4,3,1,4,2,4,4,4,4,3,3,3,3,4,5,5,4,5,
%T A325034 3,4,2,2,3,5,6,3,4,5,4,5,6,5,2,5,5,4,1,4,5,4,2,4,7,5,4,6,3,6,4,5,8,6,
%U A325034 5,4,3,5,8,3,5,3,4,4,5,6,4,7,9,4,6,5,4
%N A325034 Sum of products of the multisets of prime indices of each prime index of n.
%C A325034 A prime index of n is a number m such that prime(m) divides n. The multiset of prime indices of n is row n of A112798.
%F A325034 Totally additive with a(prime(n)) = A003963(n).
%e A325034 94 has prime indices {1,15} with prime indices {{},{2,3}} with products {1,6} with sum a(94) = 7.
%t A325034 primeMS[n_]:=If[n==1,{},Flatten[Cases[FactorInteger[n],{p_,k_}:>Table[PrimePi[p],{k}]]]];
%t A325034 Table[Plus@@Times@@@primeMS/@primeMS[n],{n,100}]
%Y A325034 Cf. A000720, A001055, A001222, A003963, A056239, A066739, A112798, A302242.
%Y A325034 Cf. A324926, A325031, A325032, A325033, A325035.
%K A325034 nonn
%O A325034 1,4
%A A325034 _Gus Wiseman_, Mar 25 2019