A166055 Integers of the form 4n+3 for which Sum_{i=1..u} J(i,4n+3) obtains value zero exactly 5 times, when u ranges from 1 to (4n+3). Here J(i,k) is the Jacobi symbol.

19, 35, 59, 63, 103, 131, 251, 279, 299, 371, 395, 419, 495, 711, 755, 899, 927, 943, 971, 1091, 1139, 1143, 1207, 1359, 1595, 1739, 1743, 1791, 1811, 1931, 1979, 2007, 2219, 2411, 2423, 2435, 2439, 2651, 2655, 2703, 2771, 2847, 2871, 2915, 2939

Offset: 1

Author

Antti Karttunen, Oct 08 2009

Keywords

• nonn

Comments

Third row of A166092.

Crossrefs

Cf. A004767, A166054, A166092.

Formula

a(n) = A004767(A166054(n)).