Search: id:A028505
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%I A028505
%S A028505 25,46,62,78,95,109,125,139,154,168,184,196,211,222,239,251,266,278,290,
%T A028505 303,317,327,342,357,367,378,393,407,419,430,442,452,463,478,489,503,
%U A028505 516,528,539,550,565,574,590,599,610,622,634,646,654,669,681,692,702
%N A028505 Number of primes <= 100*n.
%D A028505 Fred W. Helenius (fredh(AT)ix.netcom.com), posting to newsgroup rec.puzzles, 
               Dec. 1997.
%H A028505 Robert G. Wilson v, <a href="b028505.txt">Table of n, a(n) for n = 0..10000</
               a>
%H A028505 J. Betrema, <a href="http://www.labri.fr/Perso/~betrema/deug/poly/annexes/
               premiers.html">Table et repartition des nombres premiers inferieurs 
               a 10000</a>
%H A028505 A. Booker, <a href="http://primes.utm.edu/nthprime">The Nth Prime Page</
               a>
%H A028505 Thomas R. Nicely, <a href="http://www.trnicely.net/index.html">Some Results 
               of Computational Research in Prime Numbers</a>
%H A028505 Tomas Oliveira e Silva, <a href="http://www.ieeta.pt/~tos/primes/1d02.txt.gz">
               Tables of values of pi(x) and of pi2(x)</a>
%t A028505 Table[ PrimePi[ n*100 ], {n, 55}] (* Robert G. Wilson v (rgwv(AT)rgwv.com), 
               Jan 29 2003 *)
%o A028505 (Macsyma) for n:1 through 50 do print(prime_pi(100*n));
%Y A028505 Cf. A038801, A038812, A038813, A038814, A038815, A038816, A038817, A038818, 
               A038819, A038820.
%Y A028505 Cf. A038821, A080122, A080123, A080124, A080125, A080126, A080127, A080128, 
               A080129.
%Y A028505 Sequence in context: A015911 A054520 A038811 this_sequence A154082 A143278 
               A106632
%Y A028505 Adjacent sequences: A028502 A028503 A028504 this_sequence A028506 A028507 
               A028508
%K A028505 nonn
%O A028505 1,1
%A A028505 Chris Cole (chris(AT)questrel.com)

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