Search: id:A117481
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%I A117481
%S A117481 1,2,6,12,60,30,210,56,504,5040,55440,132,1716,182,2730,43680,742560,
%T A117481 306,5814,380,7980,175560,4037880,552,13800,358800,9687600,271252800,
%U A117481 7866331200,870,26970,992,32736,1113024,38955840,1401410240,51889178880
%N A117481 Numbers a(n)=n*(n-1)*(n-2)*(n-3)*...*(n-k) such that (n-k) is the largest 
               prime number smaller than n.
%F A117481 a(n)=n*(n-1)*(n-2)*(n-3)*...*(n-k)
%e A117481 a(10)=10*9*8*7=5040 because 7 is the largest possible prime number smaller 
               than 10.
%Y A117481 Sequence in context: A119862 A111936 A002805 this_sequence A083268 A085911 
               A058312
%Y A117481 Adjacent sequences: A117478 A117479 A117480 this_sequence A117482 A117483 
               A117484
%K A117481 nonn
%O A117481 0,2
%A A117481 Luc Stevens (lms022(AT)yahoo.com), Apr 25 2006

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