Search: id:A048836
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%I A048836
%S A048836 1,7,2,8,7,5,7,6,0,5,3,0,2,2,3,4,1,2,2,4,1,1,2,7,5,2,3,0,3,8,5,3,8,7,6,
%T A048836 7,4,5,9,6,6,0,6,7,7,9,1,4,8,5,1,3,1,0,5,2,6,6,4,7,6,9,0,5,6,3,2,4,8,6,
%U A048836 9,5,8,8,9,3,1,3,7,2,1,7,9,7,3,8,0,4,9,7,4,6,2,5,3,7,0,1,1,9
%N A048836 Decimal expansion of fourth Smarandache constant (a=1).
%D A048836 I. Cojocaru, S. Cojocaru, The Third and Fourth Constants of Smarandache, 
               Smarandache Notions Journal, Vol. 7, No. 1-2-3, 1996, 121-126.
%H A048836 M. L. Perez et al., eds., <a href="http://www.gallup.unm.edu/~smarandache/
               ">Smarandache Notions Journal</a>
%H A048836 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               SmarandacheConstants.html">Smarandache Constants</a>
%F A048836 Sum_{n >= 2} (n/Product_{i >= 2} S(i)), where S(n) is the Kempner-Smarandache 
               function A002034.
%e A048836 Constant=1.72875760530223...
%o A048836 (PARI) S(n)=local(m);if(isprime(n),n,m=1;while(m!%n!=0,m++);m S4(a,k)=local(v,
               i,p,y);v=vector(k,i,S(i));p=1;y=0.;for(i=2,k,p*=v[i];y+=i^a/p);y 
               S4(1,200) - Frank Adams-Watters (FrankTAW(AT)Netscape.net), Apr 18 
               2006
%Y A048836 Sequence in context: A121239 A093753 A107311 this_sequence A086236 A125126 
               A092036
%Y A048836 Adjacent sequences: A048833 A048834 A048835 this_sequence A048837 A048838 
               A048839
%K A048836 nonn,cons
%O A048836 1,2
%A A048836 Charles T. Le (charlestle(AT)yahoo.com)
%E A048836 More terms from Frank Adams-Watters (FrankTAW(AT)Netscape.net), Apr 18 
               2006

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