A043092 Numbers in which every string of 2 consecutive base 6 digits contains exactly 2 distinct numbers.

0, 1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 15, 16, 17, 18, 19, 20, 22, 23, 24, 25, 26, 27, 29, 30, 31, 32, 33, 34, 37, 38, 39, 40, 41, 48, 49, 51, 52, 53, 54, 55, 56, 58, 59, 60, 61, 62, 63, 65, 66, 67, 68, 69, 70, 73, 74, 75, 76, 77, 78, 80

Offset

1,3

Links

Table of n, a(n) for n=1..63.

Mathematica

Select[Range[0, 80], FreeQ[Differences[IntegerDigits[#, 6]], 0]&] (* Harvey P. Dale, Sep 09 2016 *)

Crossrefs

Cf. A000975 (base-2 analog), A031941 or A043089 (base-3 analog), A031942 or A043090 (base-4 analog), A031943 or A043091 (base-5 analog), A043093, ..., A043096 (base-7 through base-10 analog).

Sequence in context: A047304 A020658 A195178 * A023801 A332107 A267305

Adjacent sequences: A043089 A043090 A043091 * A043093 A043094 A043095

Keyword

nonn,base

Author

Clark Kimberling

Status

approved