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%I A112347
%S A112347 0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
%T A112347 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
%U A112347 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1
%V A112347 0,1,1,-1,1,1,-1,-1,1,1,1,-1,-1,1,-1,-1,1,1,1,-1,1,1,-1,-1,-1,1,1,-1,-1,
               1,-1,-1,1,1,1,
%W A112347 -1,1,1,-1,-1,1,1,1,-1,-1,1,-1,-1,-1,1,1,-1,1,1,-1,-1,-1,1,1,-1,-1,1,-1,
               -1,1,1,1,-1,1,
%X A112347 1,-1,-1,1,1,1,-1,-1,1,-1,-1,1,1,1,-1,1,1,-1,-1,-1,1,1,-1,-1,1,-1,-1,-1,
               1,1,-1,1,1,-1
%N A112347 Kronecker symbol (-1,n) except a(0)=0.
%F A112347 Multiplicative with a(2^e) = 1, a(p^e) = (-1)^(e(p-1)/2) if p>2.
%F A112347 a(2n)=a(n), a(4n+1)=1, a(4n+3)=-1. a(-n)=-a(n).
%o A112347 (PARI) a(n)=if(n,kronecker(-1,n))
%Y A112347 Cf. A034947(n)=a(n) if n nonzero.
%Y A112347 Sequence in context: A057427 A057428 A062157 this_sequence A134824 A000007 
               A014041
%Y A112347 Adjacent sequences: A112344 A112345 A112346 this_sequence A112348 A112349 
               A112350
%K A112347 sign,mult
%O A112347 0,1
%A A112347 Michael Somos, Sep 12 2005

    
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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.


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