This site is supported by donations to The OEIS Foundation.

 Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing. Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A295102 Squarefree numbers n that are sqrt(n)-smooth: if prime p|n then p^2 <= n. 2
 1, 30, 70, 105, 154, 165, 182, 195, 210, 231, 273, 286, 330, 357, 374, 385, 390, 399, 418, 429, 442, 455, 462, 494, 510, 546, 561, 570, 595, 598, 627, 646, 663, 665, 690, 714, 715, 741, 759, 770, 782, 798, 805, 858, 870, 874, 897, 910, 935, 957, 966, 969 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS If n is in the sequence and m < n is squarefree and coprime to n, then m*n is in the sequence. - Robert Israel, Aug 12 2019 LINKS Robert Israel, Table of n, a(n) for n = 1..10000 MAPLE filter:= proc(n) local t;   andmap(t -> t[2]=1 and t[1]^2<=n, ifactors(n)[2]) end proc: select(filter, [\$1..1000]); # Robert Israel, Aug 12 2019 PROG (PARI) isok(n) = (n==1) || (issquarefree(n) && (vecmax(factor(n)[, 1])^2 < n)); \\ Michel Marcus, Aug 12 2019 CROSSREFS Squarefree terms of A048098, and also of A063539. Besides initial 1, subsequence of A164596. Together with A001248, forms indices of records in A295101. Cf. A005117. Sequence in context: A182996 A325378 A164596 * A131647 A301900 A071141 Adjacent sequences:  A295099 A295100 A295101 * A295103 A295104 A295105 KEYWORD nonn AUTHOR Max Alekseyev, Nov 14 2017 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified December 15 22:02 EST 2019. Contains 330012 sequences. (Running on oeis4.)