A044060 Numbers n such that string 2,2 occurs in the base 3 representation of n but not of n-1.

8, 17, 24, 35, 44, 51, 62, 71, 89, 98, 105, 116, 125, 132, 143, 152, 170, 179, 186, 197, 206, 213, 251, 260, 267, 278, 287, 294, 305, 314, 332, 341, 348, 359, 368, 375, 386, 395, 413, 422, 429, 440, 449, 456, 494, 503, 510, 521