A043871 Number of runs in the base 4 representation of n is congruent to 4 mod 10.

68, 70, 71, 72, 73, 75, 76, 77, 78, 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, 156, 157, 158, 177, 178, 179

Offset

1,1

Links

Table of n, a(n) for n=1..48.

Mathematica

Select[Range[200], Mod[Length[Split[IntegerDigits[#, 4]]], 10]==4&] (* Harvey P. Dale, Mar 25 2024 *)

Crossrefs

Sequence in context: A043847 A043854 A043862 * A269987 A058906 A130694

Adjacent sequences: A043868 A043869 A043870 * A043872 A043873 A043874

Keyword

nonn,base

Author

Clark Kimberling

Status

approved