A048406 Numbers whose consecutive digits differ by 4.
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 15, 26, 37, 40, 48, 51, 59, 62, 73, 84, 95, 151, 159, 262, 373, 404, 484, 515, 595, 626, 737, 840, 848, 951, 959, 1515, 1595, 2626, 3737, 4040, 4048, 4840, 4848, 5151, 5159, 5951, 5959, 6262, 7373, 8404, 8484, 9515, 9595, 15151
Offset: 0