Hello seqFans, What could be the longest seq. where two consecutive terms share no digit with their difference? Some examples of (too) short such seq.: S: 1 3 5 7 9 11 20 END d: 2 2 2 2 2 9 S: 2 3 4 5 6 7 8 9 11 33 41 63 71 93 101 END d: 1 1 1 1 1 1 1 2 22 8 22 8 22 8 Best, É.