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A190293 Numbers with prime factorization pqr^2s^5. 3
10080, 15840, 16800, 18720, 22176, 23520, 24480, 26208, 26400, 27360, 31200, 33120, 34020, 34272, 38304, 40800, 41184, 41760, 44640, 45600, 46368, 51744, 53280, 53460, 53856, 55200, 58080, 58464, 59040, 60192, 61152, 61600, 61920, 62496 (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, 2, 5}; Select[Range[100000], f]

PROG

(PARI) list(lim)=my(v=List(), t1, t2, t3); forprime(p=2, sqrtnint(lim\60, 5), t1=p^5; forprime(q=2, sqrtint(lim\(6*t1)), if(q==p, next); t2=q^2*t1; forprime(r=2, lim\(2*t2), if(r==p || r==q, next); t3=r*t2; forprime(s=2, lim\t3, if(s==p || s==q || s==r, next); listput(v, t3*s))))); Set(v) \\ Charles R Greathouse IV, Aug 25 2016

CROSSREFS

Cf. A162144, A190115, A190292.

Sequence in context: A234773 A203865 A145836 * A179729 A217867 A157288

Adjacent sequences:  A190290 A190291 A190292 * A190294 A190295 A190296

KEYWORD

nonn

AUTHOR

Vladimir Joseph Stephan Orlovsky, May 07 2011

STATUS

approved

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Last modified April 18 14:46 EDT 2019. Contains 322209 sequences. (Running on oeis4.)