A095101 Integers n of the form 4k+3 for which some of the sums Sum_{i=1..u} J(i/n) (with u ranging from 1 to (n-1)) is negative, where J(i/n) is Jacobi symbol of i and n.

19, 43, 51, 67, 91, 99, 107, 115, 123, 127, 139, 147, 155, 163, 179, 187, 195, 203, 207, 211, 219, 223, 227, 235, 247, 259, 267, 275, 283, 291, 307, 315, 323, 331, 339, 347, 355, 367, 379, 387, 403, 411, 423, 427, 435, 443, 451, 459, 463, 467