Search: id:A088922
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%I A088922
%S A088922 0,1,2,3,3,5,4,6,6,7,6,10,7,9,10,11,9,13,10,14,13,13,12,18,14,15,16,
%T A088922 18,15,21,16,20,19,19,20,25,19,21,22,26,21,27,22,26,27,25,24,32,26,
%U A088922 29
%N A088922 Consider the n X n matrix with entries (i*j mod n), where i,j=0..n-1; 
               a(n) = rank of this matrix over the real numbers.
%F A088922 Conjecture: for every prime p>=3, a(p) = (p+1)/2.
%Y A088922 Sequence in context: A159070 A088241 A163126 this_sequence A143092 A143089 
               A161857
%Y A088922 Adjacent sequences: A088919 A088920 A088921 this_sequence A088923 A088924 
               A088925
%K A088922 nonn
%O A088922 1,3
%A A088922 Max Alekseyev (maxale(AT)gmail.com), Dec 01 2003

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