Search: id:A118290
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%I A118290
%S A118290 1,1,2,1,4,2,3,1,8,4,5,1,12,6,7,1,16,8,9,4,10,11,1,23,1,25,3,5,4,12,
%T A118290 13,1,32,14,15,7,3,8,16,17,1,41,1,43,1,45,9,10,18,19,1,51,12,20,21,
%U A118290 14,22,23,2,24,25,9,16,26,27,17,3,18,28,29,1,71,1,73,1,75,20,30,31
%N A118290 a(1) = 1. a(n) = number of terms among the sequence's first (n-1) terms 
               which are divisible by the smallest prime dividing a(n-1), or which 
               are divisible by 1 if a(n-1)= 1.
%C A118290 If a(n-1) = 1, then a(n) = n-1, obviously.
%H A118290 Diana Mecum, <a href="b118290.txt">Table of n, a(n) for n = 1..200</a>
%H A118290 Leroy Quet, <a href="http://www.prism-of-spirals.net/">Home Page</a> 
               (listed in lieu of email address)
%e A118290 a(13)= 12. So a(14) = the number of terms among the first 13 terms which 
               are divisible by the lowest prime dividing 12 (which is 2).
%e A118290 a(3)=2, a(5)=4, a(6)=2, a(9)=8, a(10)=4 and a(13) = 12 are the six terms 
               each divisible by 2, so a(14) = 6.
%Y A118290 Cf. A118291.
%Y A118290 Sequence in context: A128520 A123755 A118291 this_sequence A132223 A135941 
               A036998
%Y A118290 Adjacent sequences: A118287 A118288 A118289 this_sequence A118291 A118292 
               A118293
%K A118290 nonn
%O A118290 1,3
%A A118290 Leroy Quet Apr 22 2006
%E A118290 More terms from Diana Mecum (diana.mecum(AT)gmail.com), May 29 2007

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