A044450 Numbers n such that string 2,0 occurs in the base 4 representation of n but not of n+1.

8, 24, 35, 40, 56, 72, 88, 99, 104, 120, 143, 152, 163, 168, 184, 200, 216, 227, 232, 248, 264, 280, 291, 296, 312, 328, 344, 355, 360, 376, 399, 408, 419, 424, 440, 456, 472, 483, 488, 504, 575, 584, 600, 611, 616, 632, 655, 664