A043091 Every string of 2 consecutive base 5 digits contains exactly 2 distinct numbers.

0, 1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 19, 20, 21, 22, 23, 26, 27, 28, 29, 35, 36, 38, 39, 40, 41, 42, 44, 45, 46, 47, 48, 51, 52, 53, 54, 55, 57, 58, 59, 65, 66, 67, 69, 70, 71, 72, 73, 76, 77, 78, 79, 80, 82, 83, 84, 85, 86

Offset

0,3

Links

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

Formula

A031943 UNION {0}. [From R. J. Mathar, Oct 20 2008]

Mathematica

Select[Range[0, 100], FreeQ[Differences[IntegerDigits[#, 5]], 0]&] (* Harvey P. Dale, Apr 04 2015 *)

Crossrefs

Sequence in context: A254278 A204878 A037918 * A031943 A023800 A320340

Adjacent sequences: A043088 A043089 A043090 * A043092 A043093 A043094

Keyword

nonn,base

Author

Clark Kimberling

Status

approved