OFFSET
1,3
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..10000
Sanford L. Segal, On Pi(x+y)<=Pi(x)+Pi(y), Transactions American Mathematical Society, Vol. 104, No. 3 (1962), pp. 523-527.
FORMULA
Table[n*PrimePi[n]-PrimePi[n^2], {n, 1, 100}]
EXAMPLE
pi(100) = 25, 10*pi(10) = 40, a(10) = 40-25 = 15.
CROSSREFS
KEYWORD
nonn
AUTHOR
Labos Elemer, Mar 26 2001
EXTENSIONS
Offset corrected by Amiram Eldar, Sep 06 2024
STATUS
approved