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

 

Logo

110 people attended OEIS-50 (videos, suggestions); annual fundraising drive to start soon (donate); editors, please edit! (stack is over 300), your editing is more valuable than any donation.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A078312 Greatest prime factor of n*rad(n)+1, where rad=A007947 (squarefree kernel). 3
2, 5, 5, 3, 13, 37, 5, 17, 7, 101, 61, 73, 17, 197, 113, 11, 29, 109, 181, 67, 17, 97, 53, 29, 7, 677, 41, 131, 421, 53, 37, 13, 109, 89, 613, 31, 137, 17, 761, 401, 29, 353, 37, 19, 13, 73, 17, 17, 43, 167, 1301, 41, 281, 13, 89, 157, 13, 673, 1741, 1801, 1861, 769 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(n)=A006530(A078310(n)).

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

PROG

(Haskell)

a078312 = a006530 . a078310  -- Reinhard Zumkeller, Jul 23 2013

CROSSREFS

Cf. A078311.

Sequence in context: A115522 A190283 A194367 * A004582 A074269 A198542

Adjacent sequences:  A078309 A078310 A078311 * A078313 A078314 A078315

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Nov 23 2002

STATUS

approved

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

Content is available under The OEIS End-User License Agreement .

Last modified October 26 02:56 EDT 2014. Contains 248566 sequences.