A032970 Numbers with the property that all pairs of consecutive base-7 digits differ by more than 1.

1, 2, 3, 4, 5, 6, 10, 11, 12, 13, 14, 18, 19, 20, 21, 22, 26, 27, 28, 29, 30, 34, 35, 36, 37, 38, 42, 43, 44, 45, 46, 70, 71, 75, 76, 77, 78, 79, 83, 84, 85, 86, 87, 91, 92, 93, 94, 95, 100, 101, 102, 103, 104, 126, 127, 128, 132, 133, 134

Offset

1,2

Links

Table of n, a(n) for n=1..59.

Mathematica

Select[Range[200], Min[Abs[Differences[IntegerDigits[#, 7]]]]>1&] (* Harvey P. Dale, May 04 2021 *)

Crossrefs

Sequence in context: A285469 A302706 A047423 * A137691 A215726 A158520

Adjacent sequences: A032967 A032968 A032969 * A032971 A032972 A032973

Keyword

nonn,base

Author

Clark Kimberling

Status

approved