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, 5}; Select[Range[10000], f]
PROG
(PARI) list(lim)=my(v=List(), t); forprime(p=2, (lim\6)^(1/5), forprime(q=2, sqrt(lim\p^5), if(p==q, next); t=p^5*q; forprime(r=q+1, lim\t, if(p==r, next); listput(v, t*r)))); vecsort(Vec(v)) \\ Charles R Greathouse IV, Jul 20 2011
CROSSREFS
KEYWORD
nonn
AUTHOR
Vladimir Joseph Stephan Orlovsky, Jul 23 2010
STATUS
approved