A043826 Numbers n such that number of runs in the base 4 representation of n is congruent to 1 mod 3.

1, 2, 3, 5, 10, 15, 21, 42, 63, 68, 70, 71, 72, 73, 75, 76, 77, 78, 85, 97, 98, 99, 100, 102, 103, 108, 109, 110, 113, 114, 115, 116, 118, 119, 120, 121, 123, 132, 134, 135, 136, 137, 139, 140, 141, 142, 145, 146, 147, 152, 153, 155

Offset

1,2

Links

Table of n, a(n) for n=1..52.

Mathematica

Select[Range[200], Mod[Length[Split[IntegerDigits[#, 4]]], 3]==1&] (* Harvey P. Dale, Aug 17 2024 *)

Crossrefs

Sequence in context: A050947 A037387 A256055 * A043829 A043833 A043838

Adjacent sequences: A043823 A043824 A043825 * A043827 A043828 A043829

Keyword

nonn,base

Author

Clark Kimberling

Status

approved