OFFSET
0,1
COMMENTS
Absolute difference between this number and A139396 is about 0.002.
EXAMPLE
0.56767031984451972084069824229423267255811481373467378638342..
MAPLE
P:=proc(n) local a, b, i, j, k; a:=0.5; k:=1; for i from 2 by 1 to n do b:=1; for j from k by 1 to k+i-1 do b:=b*1/ithprime(j+1); od; k:=j; a:=evalf(a+b, 105); od; print(a); end: P(100);
CROSSREFS
KEYWORD
AUTHOR
Paolo P. Lava and Giorgio Balzarotti, Apr 18 2008
STATUS
approved