Search: id:A046306
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%I A046306
%S A046306 64,96,144,160,216,224,240,324,336,352,360,400,416,486,504,528,540,544,
%T A046306 560,600,608,624,729,736,756,784,792,810,816,840,880,900,912,928,936,
%U A046306 992,1000,1040,1104,1134,1176,1184,1188,1215,1224,1232,1260,1312,1320
%N A046306 Numbers that are divisible by exactly 6 primes (counted with multiplicity).
%C A046306 Also called 6-almost primes. Products of exactly 6 primes (not necessarily 
               distinct). Any 6-almost prime can be represented in several ways 
               as a product of two 3-almost primes A014612 and in several ways as 
               a product of three semiprimes A001358. - Jonathan Vos Post (jvospost3(AT)gmail.com), 
               Dec 11 2004
%H A046306 T. D. Noe, <a href="b046306.txt">Table of n, a(n) for n=1..10000</a>
%H A046306 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               AlmostPrime.html">Reference</a>
%F A046306 Product p_i^e_i with Sum e_i = 6.
%t A046306 Select[Range[500], Plus @@ Last /@ FactorInteger[ # ] == 6 &] - Vladimir 
               Orlovsky, Apr 23 2008
%Y A046306 Cf. A046305, A120047 (number of 6-almost primes <= 10^n).
%Y A046306 Cf. A014612, A001358, A101605, A101606.
%Y A046306 Sequence in context: A046305 A114828 A036330 this_sequence A104022 A061099 
               A118488
%Y A046306 Adjacent sequences: A046303 A046304 A046305 this_sequence A046307 A046308 
               A046309
%K A046306 nonn
%O A046306 1,1
%A A046306 Patrick De Geest (pdg(AT)worldofnumbers.com), Jun 15 1998.

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