A043877 0 and 1 occur juxtaposed in the base 3 representation of n but not of n+1.

3, 12, 19, 21, 39, 46, 48, 55, 59, 66, 73, 75, 120, 127, 129, 136, 140, 147, 154, 156, 163, 167, 179, 181, 183, 201, 208, 210, 217, 221, 228, 235, 237, 363, 370, 372, 379, 383, 390, 397, 399, 406, 410, 422, 424, 426, 444, 451, 453