The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A043688 a(n) = (s(n)-1)/2, where s(n) is the n-th number whose base-2 representation has exactly 5 runs. 2
 10, 18, 20, 21, 22, 26, 34, 36, 37, 38, 40, 41, 43, 44, 45, 46, 50, 52, 53, 54, 58, 66, 68, 69, 70, 72, 73, 75, 76, 77, 78, 80, 81, 83, 87, 88, 89, 91, 92, 93, 94, 98, 100, 101, 102, 104, 105, 107, 108, 109, 110, 114, 116, 117, 118, 122 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS a(n) = A238247(n) - 1. - Reinhard Zumkeller, Feb 20 2014 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..1000 MATHEMATICA (#-1)/2&/@Select[Range[400], Length[Split[IntegerDigits[#, 2]]]==5&] (* Harvey P. Dale, Oct 04 2013 *) CROSSREFS Cf. A238247. Sequence in context: A084487 A055567 A087119 * A004752 A087141 A349090 Adjacent sequences: A043685 A043686 A043687 * A043689 A043690 A043691 KEYWORD nonn,base AUTHOR STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified March 29 01:21 EDT 2023. Contains 361596 sequences. (Running on oeis4.)