A078694 Numbers n such that floor(2*pi*n) is prime.

5, 6, 7, 18, 21, 25, 26, 40, 41, 42, 49, 61, 62, 69, 70, 83, 91, 103, 104, 105, 110, 113, 127, 131, 132, 145, 148, 154, 167, 169, 174, 188, 189, 190, 196, 197, 210, 231, 237, 252, 258, 259, 272, 274, 279, 280, 294, 315, 323, 336, 339, 344, 357, 364, 365, 379