Search: id:A046094
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%I A046094
%S A046094 0,1,1,0,1,0,1,0,3,0,1,0,1,0,5,0,1,0,1,0,0,0,1,0,5,0,9,0,1,0,1,0,11,0,
%T A046094 0,0,1,0,13,0,1,0,1,0,24,0,1,0,7,0,0,0,1,0,0,0,0,0,1,0,1,0,21,0,0,0,1,
%U A046094 0,23,0,1,0,1,0,25,0,0,0,1,0,0,0,1,0,17,0,29,0,1,0,13,0,31,0,0,0,1,0
%N A046094 Argoh's congruence; a(n) is conjectured to be 1 iff n is prime.
%D A046094 Borwein, D.; Borwein, J.M.; Borwein, P.B.; and Girgensohn, R. ``Giuga's 
               Conjecture on Primality.'' Amer. Math. Monthly, 103, 40-50, 1996.
%H A046094 <a href="Sindx_Be.html#Bernoulli">Index entries for sequences related 
               to Bernoulli numbers.</a>
%H A046094 Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/
               AgohsConjecture.html">Link to a section of The World of Mathematics.</
               a>
%t A046094 a[ n_ ] := -Mod[ n Bernoulli[ n-1 ], n ]
%Y A046094 Sequence in context: A129685 A140807 A091959 this_sequence A055976 A093684 
               A101270
%Y A046094 Adjacent sequences: A046091 A046092 A046093 this_sequence A046095 A046096 
               A046097
%K A046094 nonn
%O A046094 1,9
%A A046094 Eric Weisstein (eric(AT)weisstein.com)

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