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

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, 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, 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

Offset

0,1

References

I. Cojocaru, S. Cojocaru, The Third and Fourth Constants of Smarandache, Smarandache Notions Journal, Vol. 7, No. 1-2-3, 1996, 121-126.

Links

Table of n, a(n) for n=0..99.

Eric Weisstein's World of Mathematics, Smarandache Constants

Example

0.719960700043708...

Prog

(PARI) S(n)=local(m); if(isprime(n), n, m=1; while(m!%n!=0, m++); m 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 S3(200) \\ Franklin T. Adams-Watters, Apr 18 2006

Crossrefs

Sequence in context: A199669 A349580 A197019 * A124970 A251768 A338561

Adjacent sequences: A048832 A048833 A048834 * A048836 A048837 A048838

Keyword

nonn,cons

Author

Charles T. Le (charlestle(AT)yahoo.com)

Extensions

More terms from Franklin T. Adams-Watters, Apr 18 2006

Name corrected by Sean A. Irvine, Jul 10 2021

Status

approved