OFFSET
1,1
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..1000
EXAMPLE
6858=2*3^3*127,6859=19^3,6860=2^2*5*7^3,..
MATHEMATICA
f[n_]:=MemberQ[Last/@FactorInteger[n], 3]; Select[Range[9!], f[#]&&f[#+1]&&f[#+2]&]
SequencePosition[Table[If[MemberQ[FactorInteger[n][[All, 2]], 3], 1, 0], {n, 360000}], {1, 1, 1}][[All, 1]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Sep 09 2019 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Vladimir Joseph Stephan Orlovsky, Dec 07 2010
EXTENSIONS
Edited by Matthew Vandermast, Dec 09 2010
STATUS
approved