Search: id:A139182
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%I A139182
%S A139182 50,51,125,15405,26205,226700,226701,226710,226711,513090,513091,
%T A139182 1351832,8210065
%N A139182 Numbers n such that pi(n)=d_1!!*d_2!!*...*d_k!! where d_1 d_2 ... d_k 
               is the decimal expansion of n.
%C A139182 If n is in the sequence, 10 divides n and n+1 is composite then n+1 is 
               in the sequence.
%e A139182 pi(8210065)=8!!*2!!*1!!*0!!*0!!*6!!*5!!.
%Y A139182 Cf. A066457.
%Y A139182 Sequence in context: A078289 A043618 A134691 this_sequence A081646 A052261 
               A118146
%Y A139182 Adjacent sequences: A139179 A139180 A139181 this_sequence A139183 A139184 
               A139185
%K A139182 base,more,nonn,less
%O A139182 1,1
%A A139182 Farideh Firoozbakht (mymontain(AT)yahoo.com), Apr 19 2008

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