Permutations: Adjacent Elements Are Coprime

[Ray Chandler]

a(n)=n*A086595(n) so the sequence should continue 2,6,8,60,24,504,576,6480,5760,242352,93312,6200064,5612544,...
 
Ray

 


  _____  

From: זקיר סעידוב - ד\"ר/Zakir Seidov Ph.D. [mailto:zakirs at yosh.ac.il] 
Sent: Monday, March 28, 2005 3:11 PM
To: Emeric Deutsch; Joshua Zucker
Cc: Leroy Quet; seqfan
Subject: RE: Permutations: Adjacent Elements Are Coprime


2 6 8 60 24 504 576 6480

Zak

-----Original Message----- 
From: Emeric Deutsch [mailto:deutsch at duke.poly.edu] 
Sent: Mon 3/28/2005 9:39 PM 
To: Joshua Zucker 
Cc: Leroy Quet; seqfan 
Subject: Re: Permutations: Adjacent Elements Are Coprime



What if we ask in addition that also first and last entries be
relatively prime?

I got 2,6,8,60,24,504 for n=2..7. Not in OEIS.
Emeric



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