login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A328869 Numbers whose lengths of runs of 1's in their reversed binary expansion are weakly increasing. 1
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 17, 18, 20, 21, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 36, 37, 40, 41, 42, 48, 49, 50, 51, 52, 53, 54, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 68, 69, 72, 73, 74, 80, 81, 82, 84, 85, 96, 97, 98, 99 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..67.

EXAMPLE

The sequence of terms together with their reversed binary expansions begins:

   1: (1)

   2: (01)

   3: (11)

   4: (001)

   5: (101)

   6: (011)

   7: (111)

   8: (0001)

   9: (1001)

  10: (0101)

  12: (0011)

  13: (1011)

  14: (0111)

  15: (1111)

  16: (00001)

  17: (10001)

  18: (01001)

  20: (00101)

  21: (10101)

  24: (00011)

MATHEMATICA

Select[Range[100], LessEqual@@Length/@Split[Join@@Position[Reverse[IntegerDigits[#, 2]], 1], #2==#1+1&]&]

CROSSREFS

Complement of A328870.

The version for prime indices is A304678.

The binary expansion of n has A069010(n) runs of 1's.

Cf. A000120, A003714, A014081, A112769, A164707, A245563, A328592.

Sequence in context: A231238 A231239 A335523 * A004744 A171987 A072226

Adjacent sequences:  A328866 A328867 A328868 * A328870 A328871 A328872

KEYWORD

nonn

AUTHOR

Gus Wiseman, Nov 12 2019

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 7 16:08 EDT 2020. Contains 335496 sequences. (Running on oeis4.)