Permutations with fixed points

[Tanya Khovanova]

Your sequence is the sequence A002467 minus one, as you do not count an
identical permutation.
 
Tanya

--- zak seidov <zakseidov at yahoo.com> wrote:

> Dear seqfans,
> what is wrong with this sequence?
> why is not it in OEIS?
> thanks, zak
> 
> 0,3,14,75,454,3185,25485,229382
> Number of permutations of set {1..n} with at least one
> fixed point, n>=2.
> a(3)=3 because there are three permutations  with at
> least one fixed point
> with {1,2,3}: 
> {1,3,2},{2,1,3},{3,1,2};
> a(4)=14 because there are 14 permutations  with at
> least one fixed point
> with {1,2,3,4}: 
>
{1,2,4,3},{1,3,2,4},{1,3,4,2},{1,4,2,3},{1,4,3,2},{2,1,3,4},{2,3,1,4},{2,4,3,1},{3,1,2,4},{3,2,1,4},{3,2,4,1},{4,1,3,2},{4,2,1,3},{4,2,3,1}
> 
> 
> --- superseq-reply at research.att.com wrote:
> 
> > Date: Fri, 4 Jan 2008 10:53:31 -0500 (EST)
> > From: superseq-reply at research.att.com
> > To: zakseidov at yahoo.com
> > Subject: Reply from superseeker
> > 
> > Report on [ 14,75,454,3185,25485,229382]:
> > Many tests are carried out, but only potentially
> > useful information
> > (if any) is reported here.
> > 
> > 
> > Even though there are a large number of sequences in
> > the table, at least
> > one of yours is not there! Please send it to me
> > using
> > the submission form on the sequence web page
> >
> http://www.research.att.com/~njas/sequences/Submit.html
> > and I will (probably) add it!  Include a brief
> > description. Thanks!
> > 
> > o  Take a look at my web page which does lookups
> > "online"!  Go to:
> > 	http://www.research.att.com/~njas/sequences/
> > o  The whole sequence table is also visible there,
> > as well as
> >      an explanation of the symbols used in the
> > table.
> > o  If the sequence you looked up was not in the
> > table,
> >      please send it to me using the submission form
> > on the web page!
> > o  The server  sequences at research.att.com  does a
> > simple lookup in the
> >    On-Line Encyclopedia of Integer Sequences
> > o  If the word "lookup" does not appear you will be
> > sent the help file.
> > 
> > Sequentially yours, The On-Line Encyclopedia of
> > Integer Sequences,
> > N. J. A. Sloane, AT&T Research, Florham Park NJ
> > 07932-0971 USA njas at research.att.com
> > 
> 
> 
> 
>      
>
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