OFFSET
1,2
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..10000
Eric Weisstein's World of Mathematics, Smooth Number
MATHEMATICA
s = {}; m = 13; Do[n = 3^k; While[n <= 3^m, AppendTo[s, n]; n*=2], {k, 0, m}]; DeleteDuplicates @ FoldList[Max, Differences @ Union[s]] (* Amiram Eldar, Jan 30 2020 *)
DeleteDuplicates[Differences[Select[Range[10^6], Max[FactorInteger[#][[All, 1]]]<5&]], GreaterEqual] (* Harvey P. Dale, Nov 22 2022 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Jun 03 2003
STATUS
approved