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 A190106 Numbers with prime factorization p^2*q^3*r^3. 4
 5400, 9000, 10584, 13500, 24696, 26136, 36504, 37044, 49000, 62424, 68600, 77976, 95832, 114264, 121000, 143748, 158184, 165375, 169000, 171500, 181656, 207576, 231525, 237276, 266200, 289000, 295704, 332024, 353736, 361000, 363096 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS T. D. Noe, Table of n, a(n) for n = 1..1000 Will Nicholes, Prime Signatures MATHEMATICA f[n_]:=Sort[Last/@FactorInteger[n]]=={2, 3, 3}; Select[Range[500000], f] PROG (PARI) list(lim)=my(v=List(), t1, t2); forprime(p=2, (lim\4)^(1/6), t1=p^3; forprime(q=p+1, (lim\t1)^(1/3), t2=t1*q^3; forprime(r=2, sqrt(lim\t2), if(p==r||q==r, next); listput(v, t2*r^2)))); vecsort(Vec(v)) \\ Charles R Greathouse IV, Jul 20 2011 CROSSREFS Cf. A179691, A179698, A179746, A189991. Sequence in context: A335939 A328562 A340109 * A252572 A035902 A203711 Adjacent sequences:  A190103 A190104 A190105 * A190107 A190108 A190109 KEYWORD nonn AUTHOR Vladimir Joseph Stephan Orlovsky, May 04 2011 STATUS approved

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Last modified August 11 15:10 EDT 2022. Contains 356066 sequences. (Running on oeis4.)