A044443 Numbers n such that string 0,1 occurs in the base 4 representation of n but not of n+1.

17, 33, 49, 65, 71, 81, 97, 113, 129, 135, 145, 161, 177, 193, 199, 209, 225, 241, 257, 263, 287, 289, 305, 321, 327, 337, 353, 369, 385, 391, 401, 417, 433, 449, 455, 465, 481, 497, 513, 519, 543, 545, 561, 577, 583, 593, 609

Offset

1,1

Links

Table of n, a(n) for n=1..47.

Mathematica

SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 4], {0, 1}]>0, 1, 0], {n, 700}], {1, 0}][[All, 1]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Jul 09 2021 *)

Crossrefs

Sequence in context: A138393 A340000 A044062 * A158057 A249356 A329919

Adjacent sequences: A044440 A044441 A044442 * A044444 A044445 A044446

Keyword

nonn,base

Author

Clark Kimberling

Status

approved