A033085 Numbers in which all pairs of consecutive base-7 digits differ by 2.

1, 2, 3, 4, 5, 6, 10, 14, 18, 22, 26, 30, 34, 38, 46, 71, 75, 100, 128, 132, 157, 185, 210, 214, 242, 267, 271, 324, 328, 500, 528, 700, 704, 896, 900, 928, 1100, 1104, 1296, 1300, 1472, 1500, 1504, 1696, 1700, 1872, 1900, 2268

Offset

1,2

Links

Table of n, a(n) for n=1..48.

Mathematica

Join[Range[6], Select[Range[2500], Union[Abs[Differences[IntegerDigits[#, 7]]]] == {2}&]] (* Harvey P. Dale, Jun 30 2022 *)

Crossrefs

Sequence in context: A128945 A318533 A048569 * A332320 A349862 A006543

Adjacent sequences: A033082 A033083 A033084 * A033086 A033087 A033088

Keyword

nonn,base

Author

Clark Kimberling

Status

approved