<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD><TITLE>Re: Permutations: Adjacent Elements Are Coprime</TITLE>
<META http-equiv=Content-Type content="text/html; charset=windows-1255">
<META content="MSHTML 6.00.2900.2604" name=GENERATOR></HEAD>
<BODY dir=ltr>
<DIV dir=ltr align=left><SPAN class=520272821-28032005><FONT face=Arial
color=#0000ff size=2>a(n)=n*A086595(n) so the sequence should continue
2,6,8,60,24,504,576,6480,5760,242352,93312,6200064,5612544,...</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=520272821-28032005><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=520272821-28032005><FONT face=Arial
color=#0000ff size=2>Ray</FONT></DIV>
<P dir=ltr align=left><FONT face=Arial><FONT color=#0000ff><FONT size=2><SPAN
class=520272821-28032005></SPAN></FONT></FONT></FONT> </P></SPAN><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> זקיר סעידוב - ד\"ר/Zakir Seidov Ph.D.
[mailto:zakirs@yosh.ac.il] <BR><B>Sent:</B> Monday, March 28, 2005 3:11
PM<BR><B>To:</B> Emeric Deutsch; Joshua Zucker<BR><B>Cc:</B> Leroy Quet;
seqfan<BR><B>Subject:</B> RE: Permutations: Adjacent Elements Are
Coprime<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV><B><FONT size=4>
<P><FONT size=3>2 6 8 60 24 504 576 6480</FONT></P>
<P><FONT size=3>Zak</FONT></P></B></FONT></DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV><FONT size=2>-----Original Message----- <BR><B>From:</B> Emeric Deutsch
[mailto:deutsch@duke.poly.edu] <BR><B>Sent:</B> Mon 3/28/2005 9:39 PM
<BR><B>To:</B> Joshua Zucker <BR><B>Cc:</B> Leroy Quet; seqfan
<BR><B>Subject:</B> Re: Permutations: Adjacent Elements Are
Coprime<BR><BR></FONT></DIV>
<P><FONT size=2>What if we ask in addition that also first and last entries
be<BR>relatively prime?<BR><BR>I got 2,6,8,60,24,504 for n=2..7. Not in
OEIS.<BR>Emeric<BR><BR></FONT></P></BLOCKQUOTE></BODY></HTML>