A043574 Numbers whose base-2 representation has exactly 7 runs.

85, 149, 165, 169, 171, 173, 181, 213, 277, 293, 297, 299, 301, 309, 325, 329, 331, 333, 337, 339, 343, 345, 347, 349, 357, 361, 363, 365, 373, 405, 421, 425, 427, 429, 437, 469, 533, 549, 553, 555, 557, 565, 581, 585, 587, 589

Offset

1,1

Links

Table of n, a(n) for n=1..46.

Mathematica

Select[Range[600], Length[Split[IntegerDigits[#, 2]]]==7&] (* Harvey P. Dale, May 18 2011 *)

Crossrefs

Sequence in context: A029471 A083750 A043684 * A043739 A043753 A043761

Adjacent sequences: A043571 A043572 A043573 * A043575 A043576 A043577

Keyword

nonn,base

Author

Clark Kimberling

Status

approved