A328870 Numbers whose lengths of runs of 1's in their reversed binary expansion are not weakly increasing.

11, 19, 22, 23, 35, 38, 39, 43, 44, 45, 46, 47, 55, 67, 70, 71, 75, 76, 77, 78, 79, 83, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 103, 107, 110, 111, 131, 134, 135, 139, 140, 141, 142, 143, 147, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 163, 166, 167

Offset

1,1

Links

Table of n, a(n) for n=1..58.

Example

The sequence of terms together with their reversed binary expansions begins:
  11: (1101)
  19: (11001)
  22: (01101)
  23: (11101)
  35: (110001)
  38: (011001)
  39: (111001)
  43: (110101)
  44: (001101)
  45: (101101)
  46: (011101)
  47: (111101)
  55: (111011)
  67: (1100001)
  70: (0110001)
  71: (1110001)
  75: (1101001)
  76: (0011001)
  77: (1011001)
  78: (0111001)

Mathematica

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

Crossrefs

Complement of A328869.

The version for prime indices is A112769.

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

Cf. A000120, A003714, A014081, A164707, A245563, A304678, A328592.

Sequence in context: A238247 A004750 A366195 * A244287 A065126 A284783

Adjacent sequences: A328867 A328868 A328869 * A328871 A328872 A328873

Keyword

nonn

Author

Gus Wiseman, Nov 12 2019

Status

approved