A032967 Numbers n with property that all pairs of consecutive base 4 digits differ by more than 1.

1, 2, 3, 7, 8, 12, 13, 28, 29, 34, 35, 50, 51, 55, 114, 115, 119, 136, 140, 141, 200, 204, 205, 220, 221, 456, 460, 461, 476, 477, 546, 547, 562, 563, 567, 802, 803, 818, 819, 823, 882, 883, 887, 1826, 1827, 1842, 1843, 1847, 1906