A043880 Numbers n such that 0 and 1 occur juxtaposed in the base 4 representation of n but not of n+1.

4, 20, 33, 36, 49, 52, 84, 97, 100, 113, 116, 129, 135, 148, 161, 164, 177, 180, 193, 199, 212, 225, 228, 241, 244, 340, 353, 356, 369, 372, 385, 391, 404, 417, 420, 433, 436, 449, 455, 468, 481, 484, 497, 500, 513, 519, 543, 545