A043882 Numbers n such that 0 and 3 occur juxtaposed in the base 4 representation of n but not of n+1.

12, 19, 28, 35, 44, 51, 60, 67, 79, 83, 92, 99, 108, 115, 124, 131, 143, 147, 156, 163, 172, 179, 188, 207, 211, 220, 227, 236, 243, 252, 259, 271, 275, 284, 291, 300, 319, 323, 335, 339, 348, 355, 364, 371, 380, 387, 399, 403