projecteuler.net

[hv at crypt.org]

should theoretically be considered in the most general example (#83),
Return-Path: <njas at research.att.com>
X-Ids: 168
Date: Tue, 13 Mar 2007 23:37:21 -0400 (EDT)
From: "N. J. A. Sloane" <njas at research.att.com>
Message-Id: <200703140337.l2E3bLpp247196 at fry.research.att.com>
To: seqfan at ext.jussieu.fr
Subject: need help with mystery sequence
Cc: njas at research.att.com
Reply-To: njas at research.att.com
X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-2.0.2 (shiva.jussieu.fr [134.157.0.168]); Wed, 14 Mar 2007 04:37:31 +0100 (CET)
X-Virus-Scanned: ClamAV 0.88.7/2834/Wed Mar 14 02:42:15 2007 on shiva.jussieu.fr
X-Virus-Status: Clean
X-j-chkmail-Score: MSGID : 45F76DFA.002 on shiva.jussieu.fr : j-chkmail score : X : 0/50 0 0.537 -> 1
X-Miltered: at shiva.jussieu.fr with ID 45F76DFA.002 by Joe's j-chkmail (http://j-chkmail.ensmp.fr)!
Return-Path: <ralf at ark.in-berlin.de>
X-Ids: 168
X-Envelope-From: ralf at ark.in-berlin.de
Date: Wed, 14 Mar 2007 12:42:06 +0100
From: Ralf Stephan <ralf at ark.in-berlin.de>
To: Nick Hobson <nickh at qbyte.org>
Cc: seqfan at ext.jussieu.fr
Subject: Re: projecteuler.net
Message-ID: <20070314114205.GA22612 at ark.in-berlin.de>
Reply-To: ralf at ark.in-berlin.de
Mail-Followup-To: Nick Hobson <nickh at qbyte.org>, seqfan at ext.jussieu.fr
References: <d3dac270703122055t2cb2ff49yd99d093a2853e51e at mail.gmail.com> <op.to49oei6ui647s at eponymous>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <op.to49oei6ui647s at eponymous>
User-Agent: Mutt/1.5.13 (2006-08-11)
X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-2.0.2 (shiva.jussieu.fr [134.157.0.168]); Wed, 14 Mar 2007 12:45:09 +0100 (CET)
X-Virus-Scanned: ClamAV 0.88.7/2839/Wed Mar 14 10:24:32 2007 on shiva.jussieu.fr
X-Virus-Status: Clean
X-j-chkmail-Score: MSGID : 45F7E044.002 on shiva.jussieu.fr : j-chkmail score : X : 0/50 0 0.523 -> 1
X-Miltered: at shiva.jussieu.fr with ID 45F7E044.002 by Joe's j-chkmail (http://j-chkmail.ensmp.fr)!


Nick, I agree with your proposition not to submit projecteuler
related sequences. As a fascinated new solver, I'd be pissed if
there were any cheap solutions after I possibly did it the hard
way. Thus, I'd also propose not to extend some of relevant seq.
with b-files for that reason.

OTOH I must say, by chosing the right limits and examples, you 
have done a good job of posing the problems in a way that they
can be only solved by devising an efficient algorithm other than
brute force. 


Congrats for an interesting site!
ralf