Piprimes: Difference between revisions
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pi(n), the number of primes <= n, where '''pi(n) < 22'''<br>
[[wp:Prime-counting_function|Prime-counting_function]]<br>
[http://sweet.ua.pt/tos/primes.html| Tables and hints] by Tomás Oliveira e Silva
;Also see:
:* the OEIS entry: [http://oeis.org/A000720 A0000720 pi(n), the number of primes <= n. Sometimes called PrimePi(n)...].
<br><br>
=={{header|REXX}}==
<lang rexx>/*REXX program finds and displays pi(n) for 0 < N ≤ prime(22) {the 22nd prime is 87},*/
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