A043847 Number of runs in the base 4 representation of n is congruent to 4 mod 7.

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]]], 7]==4&] (* Harvey P. Dale, Aug 28 2012 *)

Crossrefs

Sequence in context: A043828 A043836 A043841 * A043854 A043862 A043871

Adjacent sequences: A043844 A043845 A043846 * A043848 A043849 A043850

Keyword

nonn,base

Author

Clark Kimberling

Status

approved