A032997 If d,e are consecutive digits of n in base 9, then |d-e|>=5.

1, 2, 3, 4, 5, 6, 7, 8, 15, 16, 17, 25, 26, 35, 45, 54, 55, 63, 64, 65, 72, 73, 74, 75, 135, 136, 144, 145, 146, 153, 154, 155, 156, 225, 226, 227, 234, 235, 236, 237, 315, 316, 317, 318, 410, 411, 412, 413, 491, 492, 493, 494, 501, 502