login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A084918 Numbers n >= 1000, such that if prime P divides n, then so does each smaller prime. 1
1024, 1050, 1080, 1152, 1200, 1260, 1296, 1350, 1440, 1458, 1470, 1500, 1536, 1620, 1680, 1728, 1800, 1890, 1920, 1944, 2048, 2100, 2160, 2250, 2304, 2310, 2400, 2430, 2520, 2592, 2700, 2880, 2916, 2940, 3000, 3072, 3150, 3240, 3360, 3456, 3600, 3750 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

A055932 lists terms below 1000.

LINKS

Table of n, a(n) for n=0..41.

MATHEMATICA

espQ[n_]:=Module[{f=FactorInteger[n][[All, 1]]}, Prime[Range[ PrimePi[ Max[f]]]] == f]; Select[Range[1000, 4000], espQ] (* Harvey P. Dale, Mar 09 2019 *)

CROSSREFS

Cf. A055932, A056808, A057335, A066099, A071364, A080259, A080404.

Sequence in context: A336780 A217850 A023075 * A235719 A057370 A057421

Adjacent sequences:  A084915 A084916 A084917 * A084919 A084920 A084921

KEYWORD

easy,nonn

AUTHOR

Alford Arnold, Jul 15 2003

EXTENSIONS

Edited by Don Reble, Nov 03 2003

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 24 08:44 EDT 2022. Contains 354024 sequences. (Running on oeis4.)