A043825 Numbers n such that number of runs in the base 4 representation of n is congruent to 0 mod 3.

17, 18, 19, 24, 25, 27, 28, 29, 30, 33, 34, 35, 36, 38, 39, 44, 45, 46, 49, 50, 51, 52, 54, 55, 56, 57, 59, 65, 66, 67, 69, 74, 79, 81, 82, 83, 88, 89, 91, 92, 93, 94, 96, 101, 104, 105, 107, 111, 112, 117, 122, 124, 125, 126, 129, 130

Offset

1,1

Links

Table of n, a(n) for n=1..56.

Mathematica

Select[Range[150], Mod[Length[Split[IntegerDigits[#, 4]]], 3]==0&] (* Harvey P. Dale, Sep 08 2023 *)

Crossrefs

Sequence in context: A018822 A304488 A043594 * A043831 A043835 A043840

Adjacent sequences: A043822 A043823 A043824 * A043826 A043827 A043828

Keyword

nonn,base

Author

Clark Kimberling

Status

approved