[seqfan] Re: conjectures, conjectures,

Paul D Hanna pauldhanna at juno.com
Thu Feb 10 22:57:26 CET 2011


Simon (and SeqFans), 
      Quite impressive!  On a very quick spot check I see your formula for A162162: 
  1-f(x)+(x+x^2)*f(x)^2+x^3*f(x)^3 ogf
 
and compare it to the OEIS definition of A162162:
  G.f. satisfies: A(x) = Catalan(x + x^2 + x^3*A(x)) 
 
and your formula is indeed correct, but not readily obvious (to me). 
 
When we update a OEIS sequence using your formula (after verifying its validity), 
how should one word the credits? 
 
Thanks!  
       Paul 
 
---------- Original Message ----------
From: Simon Plouffe <simon.plouffe at gmail.com>
To: "N. J. A. Sloane" <njas at research.att.com>,  Sequence Fanatics Discussion list <seqfan at list.seqfan.eu>
Subject: [seqfan] conjectures, conjectures,
Date: Thu, 10 Feb 2011 22:40:49 +0100




Hello,

 I re-compiled a list of formulas from the OEIS
database,
there are 31100 formulas here :

http://www.plouffe.fr/simon/OEIS/conjectures/OEIS_conjectured_formulas.txt

Best regards,

 Simon Plouffe


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