A043094 Every string of 2 consecutive base 8 digits contains exactly 2 distinct numbers.

0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 16, 17, 19, 20, 21, 22, 23, 24, 25, 26, 28, 29, 30, 31, 32, 33, 34, 35, 37, 38, 39, 40, 41, 42, 43, 44, 46, 47, 48, 49, 50, 51, 52, 53, 55, 56, 57, 58, 59, 60, 61, 62, 65, 66, 67, 68, 69, 70

Offset

0,3

Links

Table of n, a(n) for n=0..62.

Mathematica

Select[Range[0, 80], FreeQ[Differences[IntegerDigits[#, 8]], 0]&] (* Harvey P. Dale, Nov 08 2022 *)

Crossrefs

Cf. A000975 (base-2 analog), A031941 or A043089 (base-3 analog), A031942 or A043090 (base-4 analog), A031943 or A043091 (base-5 analog), A043092, ..., A043096 (base-6 through base-10 analog).

Sequence in context: A020663 A255808 A168183 * A023803 A353511 A122132

Adjacent sequences: A043091 A043092 A043093 * A043095 A043096 A043097

Keyword

nonn,base

Author

Clark Kimberling

Status

approved