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A048835 Decimal expansion of Sum_{n >= 2} (1/Product_{i=2..n} K(i)) where K(i) is the Kempner function A002034.

%I A048835 #26 Feb 16 2025 08:32:40
%S A048835 7,1,9,9,6,0,7,0,0,0,4,3,7,0,8,0,2,2,6,7,1,7,1,2,9,0,2,8,4,0,7,8,4,4,
%T A048835 9,4,1,3,4,1,2,4,9,0,5,6,7,4,8,9,2,6,0,1,9,1,5,1,5,3,4,0,0,4,2,0,8,8,
%U A048835 1,8,1,1,8,4,6,0,1,4,4,5,6,5,0,6,4,7,3,8,4,9,2,3,8,5,8,5,3,8,7,7
%N A048835 Decimal expansion of Sum_{n >= 2} (1/Product_{i=2..n} K(i)) where K(i) is the Kempner function A002034.
%D A048835 I. Cojocaru, S. Cojocaru, The Third and Fourth Constants of Smarandache, Smarandache Notions Journal, Vol. 7, No. 1-2-3, 1996, 121-126.
%H A048835 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/SmarandacheConstants.html">Smarandache Constants</a>
%e A048835 0.719960700043708...
%o A048835 (PARI)
%o A048835 S(n)=local(m);if(isprime(n),n,m=1;while(m!%n!=0,m++);m)
%o A048835 S3(k)=local(v,i,p,y);v=vector(k,i,S(i));p=1;y=0.;for(i=2,k,p*=v[i];y+=1/p);y
%o A048835 S3(200) \\ _Franklin T. Adams-Watters_, Apr 18 2006
%K A048835 nonn,cons
%O A048835 0,1
%A A048835 Charles T. Le (charlestle(AT)yahoo.com)
%E A048835 More terms from _Franklin T. Adams-Watters_, Apr 18 2006
%E A048835 Name corrected by _Sean A. Irvine_, Jul 10 2021