Search: id:A000038
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%I A000038 M0004
%S A000038 2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
%T A000038 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
%U A000038 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
%N A000038 Twice A000007.
%C A000038 Multiplicative with a(p^e) = 0. Mitch Harris (Harris.Mitchell(AT)mgh.harvard.edu) 
               Jun 09, 2005.
%C A000038 1+(-1)^nth prime. [From Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), 
               Oct 29 2009]
%D A000038 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%H A000038 Daniele A. Gewurz and Francesca Merola, <a href="http://www.cs.uwaterloo.ca/
               journals/JIS/index.html">Sequences realized as Parker vectors ...</
               a>, J. Integer Seqs., Vol. 6, 2003.
%F A000038 a(n)=2*A000007(n)=(-1)^A000040(n)+1. [From Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), 
               Oct 29 2009]
%Y A000038 Cf. A007395.
%Y A000038 Cf. A000007, A000040. [From Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), 
               Oct 29 2009]
%Y A000038 Sequence in context: A072507 A130779 A130706 this_sequence A063667 A014083 
               A112315
%Y A000038 Adjacent sequences: A000035 A000036 A000037 this_sequence A000039 A000040 
               A000041
%K A000038 easy,nonn,mult
%O A000038 0,1
%A A000038 N. J. A. Sloane (njas(AT)research.att.com).

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