Search: id:A046390
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%I A046390
%S A046390 1155,1365,1785,1995,2145,2415,2805,3003,3045,3135,3255,3315,3705,3795,
%T A046390 3885,3927,4305,4389,4485,4515,4641,4785,4845,4935,5005,5115,5187,5313,
%U A046390 5565,5655,5865,6045,6105,6195,6279,6405,6545,6555,6699,6765,6783,7035
%N A046390 Odd numbers with exactly 4 distinct prime factors.
%H A046390 T. D. Noe, <a href="b046390.txt">Table of n, a(n) for n=1..1000</a>
%t A046390 f[n_]:=Last/@FactorInteger[n]=={1,1,1,1}&&FactorInteger[n][[1,1]]>2; 
               lst={};Do[If[f[n],AppendTo[lst,n]],{n,8!}];lst [From Vladimir Orlovsky 
               (4vladimir(AT)gmail.com), Nov 23 2009]
%Y A046390 Cf. A046317, A046406.
%Y A046390 Sequence in context: A035761 A107557 A020382 this_sequence A147577 A088012 
               A046406
%Y A046390 Adjacent sequences: A046387 A046388 A046389 this_sequence A046391 A046392 
               A046393
%K A046390 nonn,new
%O A046390 1,1
%A A046390 Patrick De Geest (pdg(AT)worldofnumbers.com), Jun 15 1998.

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