Search: id:A061398
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%I A061398
%S A061398 0,0,1,1,0,2,0,2,1,1,3,2,1,1,1,3,0,3,2,0,3,1,3,4,0,1,2,0,2,6,2,2,1,5,0,
%T A061398 2,3,2,1,3,0,6,0,2,0,7,8,1,0,2,3,0,3,3,3,3,0,2,1,1,5,7,2,0,1,9,2,4,0,0,
%U A061398 4,3,2,2,2,2,5,2,4,6,0,5,0,4,1,3,4,1,1,2,6,4,1,4,2,2,7,0,8,4,4,3,2,1,2
%N A061398 Number of square-free integers between primes p(n) and p(n+1).
%H A061398 Harry J. Smith, <a href="b061398.txt">Table of n, a(n) for n=1,...,1000</
               a>
%e A061398 Between 113 and 127 the 6 square-free numbers are:{114,115,118,119,122,
               123}, so a(30)=6
%o A061398 (PARI) { n=0; q=2; forprime (p=3, prime(1001), a=0; for (i=q+1, p-1, 
               a+=issquarefree(i)); write("b061398.txt", n++, " ", a); q=p ) } [From 
               Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jul 22 2009]
%Y A061398 A005117.
%Y A061398 Sequence in context: A046069 A055651 A079627 this_sequence A080232 A008482 
               A037012
%Y A061398 Adjacent sequences: A061395 A061396 A061397 this_sequence A061399 A061400 
               A061401
%K A061398 nonn
%O A061398 1,6
%A A061398 Labos E. (labos(AT)ana.sote.hu), Jun 07 2001

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