A044453 Numbers n such that string 2,3 occurs in the base 4 representation of n but not of n+1.

11, 27, 47, 59, 75, 91, 111, 123, 139, 155, 191, 203, 219, 239, 251, 267, 283, 303, 315, 331, 347, 367, 379, 395, 411, 447, 459, 475, 495, 507, 523, 539, 559, 571, 587, 603, 623, 635, 651, 667, 767, 779, 795, 815, 827, 843, 859