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A179747 Numbers of the form p^8*q*r where p, q, and r are distinct primes. 3
3840, 5376, 8448, 8960, 9984, 13056, 14080, 14592, 16640, 17664, 19712, 21760, 22272, 23296, 23808, 24320, 28416, 29440, 30464, 31488, 33024, 34048, 36096, 36608, 37120, 39680, 40704, 41216, 45312, 46848, 47360, 47872, 51456, 51968, 52480, 53504, 54528 (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]]=={1, 1, 8}; Select[Range[60000], f]

PROG

(PARI) list(lim)=my(v=List(), t1, t2); forprime(p=2, (lim\6)^(1/8), t1=p^8; forprime(q=2, lim\t1, if(p==q, next); t2=t1*q; forprime(r=q+1, lim\t2, if(p==r, next); listput(v, t2*r)))); vecsort(Vec(v)) \\ Charles R Greathouse IV, Jul 24 2011

CROSSREFS

Sequence in context: A212228 A231416 A151564 * A237371 A061404 A234827

Adjacent sequences:  A179744 A179745 A179746 * A179748 A179749 A179750

KEYWORD

nonn

AUTHOR

Vladimir Joseph Stephan Orlovsky, Jul 25 2010

STATUS

approved

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Last modified August 11 20:13 EDT 2022. Contains 356067 sequences. (Running on oeis4.)