A106857 Primes of the form x^2+xy+3y^2, with x and y nonnegative.

3, 5, 23, 31, 37, 47, 53, 59, 67, 89, 97, 113, 157, 163, 179, 181, 191, 199, 251, 257, 269, 311, 313, 317, 331, 367, 379, 383, 389, 401, 419, 433, 443, 449, 463, 487, 499, 509, 521, 577, 587, 599, 617, 641, 643, 647, 653, 683, 691, 709, 719, 727, 751, 757