Search: id:A070297
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%I A070297
%S A070297 3,6,0,10,15,14,21,18,35,22,33,26,39,0,65,30,36,38,57,44,95,46,63,42,
%T A070297 115,50,64,58,87,54,75,68,155,60,99,74,111,72,185,66,117,86,129,92,215,
%U A070297 94,141,78,235,84,105,98,100,96,265,90,135,118,147,122,183,108
%N A070297 Smallest number with n unrelated numbers (numbers which are neither coprime 
               nor a divisor), or 0 if no such number exists.
%C A070297 The 0's are only conjectures (search extended to 2000).
%e A070297 a(0) = 4, as 4 has no unrelated numbers less than it. a(5) = 14. The 
               unrelated numbers pertaining to 14 are 4,6,8 10 and 12.
%o A070297 (PARI) for(n=0,100,s=-1:k=2:while(s!=n&&k<2000,k=k+1:s=0:for(l=2,k-1,
               if((k%l>0)&&gcd(k,l)>1,s=s+1))): if(k==2000,k=0):print1(k","))
%Y A070297 Cf. A070298.
%Y A070297 Sequence in context: A153097 A077086 A010618 this_sequence A094674 A125287 
               A009014
%Y A070297 Adjacent sequences: A070294 A070295 A070296 this_sequence A070298 A070299 
               A070300
%K A070297 nonn
%O A070297 0,1
%A A070297 Amarnath Murthy (amarnath_murthy(AT)yahoo.com), May 10 2002
%E A070297 Corrected and extended by Ralf Stephan (ralf(AT)ark.in-berlin.de), Mar 
               22 2003

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