Search: id:A120632
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%I A120632
%S A120632 2,4,8,11,18,22,29,33,40,51,54,64,72,76,84,94,104,109,120,127,132,142,
%T A120632 150,161,174,181,186,194,199,207,230,238,248,252,270,275,285,297,305,
%U A120632 317,327,331,349,353,361,365,386,407,415,419,426,438,442,460,471,482
%N A120632 Number of numbers >1 up to 2*p(n) which are divisible by primes up to 
               p(n).
%C A120632 The first p(n+1)-2 numbers >1 are divisible by primes up to p(n).
%C A120632 Complement of A137624; A137621(a(n))=A000040(n); A137621(a(n)+1)=A100484(n). 
               - Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jan 30 2008
%F A120632 a(n) = A120633(n) + A040976(n+1) = A076274(n) - A070046(n).
%e A120632 a(4)=11 because exactly 11 numbers between 2 and 2*p(4)=2*7=14,namely,
               2,3,4,5,6,7,8,9,10,12,14 are divisible by the first four primes 2,
               3,5,7.
%Y A120632 Sequence in context: A018320 A153195 A010068 this_sequence A007295 A053439 
               A033956
%Y A120632 Adjacent sequences: A120629 A120630 A120631 this_sequence A120633 A120634 
               A120635
%K A120632 nonn
%O A120632 1,1
%A A120632 Lekraj Beedassy (blekraj(AT)yahoo.com), Jun 21 2006

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