Search: id:A003960
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%I A003960
%S A003960 1,1,2,1,3,2,4,1,4,3,6,2,7,4,6,1,9,4,10,3,8,6,12,2,9,7,8,4,15,6,16,1,12,
%T A003960 9,12,4,19,10,14,3,21,8,22,6,12,12,24,2,16,9,18,7,27,8,18,4,20,15,30,6,
%U A003960 31,16,16,1,21,12,34,9,24,12,36,4,37,19,18,10,24,14,40,3,16,21,42,8,27
%N A003960 Fully multiplicative with a(p) = [ (p+1)/2 ] for prime p.
%F A003960 If n = Product p(k)^e(k) then a(n) = Product [ (p(k)+1)/2 ]^e(k).
%F A003960 Multiplicative with a(p^e) = [(p+1)/2]^e. - David W. Wilson (davidwwilson(AT)comcast.net), 
               Aug 01, 2001.
%Y A003960 Cf. A003970.
%Y A003960 Sequence in context: A136523 A163507 A003963 this_sequence A124223 A094193 
               A108712
%Y A003960 Adjacent sequences: A003957 A003958 A003959 this_sequence A003961 A003962 
               A003963
%K A003960 nonn,mult
%O A003960 1,3
%A A003960 Marc LeBrun (mlb(AT)well.com)

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