Attempted Proof of a Recent-Sequence Conjecture [A136404]
Hans Havermann
pxp at rogers.com
Sun Apr 6 04:20:35 CEST 2008
I agree, I sent the following message to Neil and to the author 7 days
ago, so far without reply.
Maximilian
---------- Forwarded message ----------
From: Maximilian Hasler <Maximilian.Hasler at martinique.univ-ag.fr>
Date: Sun, Mar 30, 2008 at 3:09 AM
Subject: bug in A005835 ?
To: "N. J. A. Sloane" <njas at research.att.com>,
reinhard.zumkeller at gmail.com, reinhard.zumkeller at lhsystems.com
I may misunderstand something, but IMO the %C is wrong, I'd rather be
tempted to say:
%C A005835 Weird numbers (A006037) are neither in this sequence,
neither in A005100.
- Maximilian F. Hasler (www.univ-ag.fr/~mhasler), Mar 30 2008
%I A005835 M4094
%S A005835 6,12,18,20,24,28,30,36,40,42,48,54,56,60,66,72,78,80,84,88,90,96,100,102,
%N A005835 Pseudoperfect (or semiperfect) numbers: some set of proper
divisors of n sums to n.
%C A005835 A033630(a(n)) > 1; complement of A005100. - Reinhard
Zumkeller (reinhard.zumkeller(AT)gmail.com),
Mar 02 2007
(snip)
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