login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A137458 Prime(core(n)). 0
2, 3, 5, 2, 11, 13, 17, 3, 2, 29, 31, 5, 41, 43, 47, 2, 59, 3, 67, 11, 73, 79, 83, 13, 2, 101, 5, 17, 109, 113, 127, 3, 137, 139, 149, 2, 157, 163, 167, 29, 179, 181, 191, 31, 11, 199, 211, 5, 2, 3, 233, 41, 241, 13, 257, 43, 269, 271, 277, 47 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Prime(Squarefree part of n).

LINKS

Table of n, a(n) for n=1..60.

FORMULA

a(n) = A000040(A007913(n)).

CROSSREFS

Cf. A000040, A007913.

Sequence in context: A021429 A262217 A124055 * A079369 A102867 A060383

Adjacent sequences:  A137455 A137456 A137457 * A137459 A137460 A137461

KEYWORD

easy,nonn

AUTHOR

Jonathan Vos Post, Apr 19 2008

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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified November 13 21:28 EST 2019. Contains 329106 sequences. (Running on oeis4.)