Search: id:A136742
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%I A136742
%S A136742 6,210,110,2730,17,19,10626,26,26970,39270,54834,74046,2162,51,53,55,
%T A136742 195054,3782,287430,342930,5402,474474,6806,635970,89,91,830490,97,
%U A136742 1061106,1190910,1330890,1481430,14042,15006,127,2196870,17822,2627934
%N A136742 Product of the n-th run of square-free numbers.
%C A136742 All terms are square-free;
%C A136742 a(n) mod A072284(n) = 0;
%C A136742 A136743(n) = A001221(a(n)).
%H A136742 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               Squarefree.html">Squarefree</a>
%F A136742 a(n) = PRODUCT(A072284(n)+k: 0<=k<A120992(n));
%e A136742 n=10: A072284(10)=33, A120992(10)=3: a(10)=33*34*35=39270.
%Y A136742 Cf. A005117.
%Y A136742 Sequence in context: A159307 A024083 A120436 this_sequence A068969 A055193 
               A094805
%Y A136742 Adjacent sequences: A136739 A136740 A136741 this_sequence A136743 A136744 
               A136745
%K A136742 nonn
%O A136742 1,1
%A A136742 Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jan 20 2008

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