Search: id:A074372
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%I A074372
%S A074372 1,3,4,3,6,6,8,3,4,8,12,6,14,10,9,3,18,6,20,8,11,14,24,6,6,16,4,10,30,
%T A074372 11,32,3,15,20,13,6,38,22,17,8,42,13,44,14,9,26,48,6,8,8,21,16,54,6,17,
%U A074372 10,23,32,60,11,62,34,11,3,19,17,68,20,27,15,72,6,74,40,9,22,19,19,80,
               8
%N A074372 1 + the sum of the distinct primes dividing n.
%H A074372 Neville Holmes, <a href="http://www.comp.utas.edu.au/users/nholmes/sqncs/
               index.htm#A074372">Integer Sequences</a>
%e A074372 2: 3 (1+2); 3: 4 (1+3); 4: 3 (1+2); 5: 6 (1+5); 6: 6 (1+2+3); ...
%p A074372 with(numtheory): a:=proc(n) local F: F:=convert(factorset(n),list): 1+sum(F[j],
               j=1..nops(F)) end: seq(a(n),n=1..90); (Deutsch)
%Y A074372 Equals 1 + A008472.
%Y A074372 Cf. A001414, A008472, A036288.
%Y A074372 Sequence in context: A005092 A136195 A117892 this_sequence A049276 A101684 
               A061800
%Y A074372 Adjacent sequences: A074369 A074370 A074371 this_sequence A074373 A074374 
               A074375
%K A074372 easy,nonn
%O A074372 1,2
%A A074372 Neville Holmes (neville.holmes(AT)utas.edu.au), Aug 22 2002
%E A074372 Corrected and extended by Emeric Deutsch (deutsch(AT)duke.poly.edu), 
               Mar 12 2005

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