1,1

Table of n, a(n) for n=1..53.

Select[Range[300], Mod[Length[Split[IntegerDigits[#, 2]]], 4]==3&] (* Harvey P. Dale, Dec 31 2017 *)

Sequence in context: A347771 A294277 A043721 * A043731 A043570 A043736

Adjacent sequences: A043724 A043725 A043726 * A043728 A043729 A043730

nonn,base

Clark Kimberling

approved