A043683 a(n) = (1/2)*(n-th number whose base-2 representation has exactly 6 runs).

21, 37, 41, 42, 43, 45, 53, 69, 73, 74, 75, 77, 81, 82, 83, 84, 86, 87, 89, 90, 91, 93, 101, 105, 106, 107, 109, 117, 133, 137, 138, 139, 141, 145, 146, 147, 148, 150, 151, 153, 154, 155, 157, 161, 162, 163, 164, 166, 167, 168, 172

Offset

1,1

Links

Table of n, a(n) for n=1..51.

Crossrefs

Sequence in context: A298472 A168513 A067598 * A173589 A043572 A043728

Adjacent sequences: A043680 A043681 A043682 * A043684 A043685 A043686

Keyword

nonn,base

Author

Clark Kimberling

Status

approved