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A165977 Primes of the form 4n+3 for which Sum_{i=1..u} J(i,4n+3) is never negative for any u in range [1,2n+1], but obtains at least one value zero, where J(i,m) is the Jacobi symbol. 3

%I

%S 11,59,83,103,131,251,419,563,607,659,971,1063,1091,1103,1427,1447,

%T 1811,1931,1979,2287,2383,2411,2543,2939,3251,3299,3659,3779,3967,

%U 4091,4259,4931,5099,5171,5407,5783,5939,6247,6299,6607,6779,6899

%N Primes of the form 4n+3 for which Sum_{i=1..u} J(i,4n+3) is never negative for any u in range [1,2n+1], but obtains at least one value zero, where J(i,m) is the Jacobi symbol.

%C Setwise difference of A095102 and A165580.

%Y Subset of A165608.

%K nonn

%O 1,1

%A _Antti Karttunen_, Oct 06 2009

%E Definition edited by _Jonathan Sondow_, Sep 26 2011

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Last modified April 21 09:52 EDT 2021. Contains 343148 sequences. (Running on oeis4.)