Search: id:A162284
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%I A162284
%S A162284 1,81,18966025,135187129,164275489,350561925,445421025,598047025,
%T A162284 649587169,748733769,850830561,960362325,1055925025,1341097641,
%U A162284 1406175001,1476326929,1520766009,1536248025,1591004025,1735566525
%N A162284 Odd numbers n such that b(n) >= n and b(b(n)) >= n, where b(n) = A161942(n) 
               = oddpart(sigma(n)).
%C A162284 Applying b a third time produces a smaller value for every number in 
               this sequence up to 10^10, except 1.
%H A162284 Robert Gerbicz, <a href="b162284.txt">Table of n,a(n) up to 10^10; n=1..43</
               a>
%Y A162284 Cf. A161942.
%Y A162284 Sequence in context: A033435 A013851 A092258 this_sequence A116268 A128838 
               A051001
%Y A162284 Adjacent sequences: A162281 A162282 A162283 this_sequence A162285 A162286 
               A162287
%K A162284 nonn
%O A162284 1,2
%A A162284 Franklin T. Adams-Watters (FrankTAW(AT)Netscape.net), Jun 29 2009
%E A162284 Values for n > 3 from Robert Gerbicz (robert.gerbicz(AT)gmail.com)

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