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 A166053 Integers of the form 4n+3 for which Sum_{i=1..u} J(i,4n+3) obtains value zero exactly 3 times, when u ranges from 1 to (4n+3). Here J(i,k) is the Jacobi symbol. 2
 11, 319, 607, 703, 895, 1063, 1103, 1135, 1447, 1495, 2287, 2383, 2543, 3223, 3967, 4255, 4615, 4807, 5143, 5207, 5407, 5695, 5783, 5983, 6247, 6487, 6607, 6799, 6943, 7495, 7927, 8503, 9103, 9127, 9655, 10183, 10615, 10735, 12055, 13207 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Second row of A166092. LINKS CROSSREFS a(n) = A004767(A166052(n)). Sequence in context: A266484 A219979 A115609 * A200749 A324422 A270815 Adjacent sequences:  A166050 A166051 A166052 * A166054 A166055 A166056 KEYWORD nonn AUTHOR Antti Karttunen, Oct 08 2009 STATUS approved

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Last modified October 29 21:18 EDT 2020. Contains 338074 sequences. (Running on oeis4.)