OFFSET
1,2
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..200
MATHEMATICA
Join[Range[5], Select[Range[5200], Union[Abs[Differences[IntegerDigits[ #, 6]]]] == {2}&]] (* Harvey P. Dale, Jul 19 2020 *)
CROSSREFS
KEYWORD
nonn,base
AUTHOR
STATUS
approved