Search: id:A046315
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%I A046315
%S A046315 9,15,21,25,33,35,39,49,51,55,57,65,69,77,85,87,91,93,95,111,115,119,
%T A046315 121,123,129,133,141,143,145,155,159,161,169,177,183,185,187,201,203,
%U A046315 205,209,213,215,217,219,221,235,237,247,249,253,259,265,267,287,289
%N A046315 Odd numbers divisible by exactly 2 primes (counted with multiplicity).
%C A046315 Or, odd semiprimes.
%H A046315 Zak Seidov, <a href="b046315.txt">Table of n, a(n) for n = 1..1956</a>
%t A046315 Do[If[Total[FactorInteger[n]][[2]]==2&&OddQ[n], Print[n]], {n, 3, 40}]$a 
               (Zak Seidov)
%Y A046315 Cf. A001358.
%Y A046315 Sequence in context: A046446 A046350 A046337 this_sequence A046372 A025045 
               A107987
%Y A046315 Adjacent sequences: A046312 A046313 A046314 this_sequence A046316 A046317 
               A046318
%K A046315 nonn
%O A046315 1,1
%A A046315 Patrick De Geest (pdg(AT)worldofnumbers.com), Jun 15 1998.

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