A044433 Numbers n such that string 0,0 occurs in the base 3 representation of n but not of n+1.

9, 18, 29, 36, 45, 56, 63, 72, 90, 99, 110, 117, 126, 137, 144, 153, 171, 180, 191, 198, 207, 218, 225, 234, 272, 279, 288, 299, 306, 315, 333, 342, 353, 360, 369, 380, 387, 396, 414, 423, 434, 441, 450, 461, 468, 477, 515, 522

Offset

1,1

Links

Table of n, a(n) for n=1..48.

Mathematica

SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 3], {0, 0}]>0, 1, 0], {n, 600}], {1, 0}][[All, 1]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Apr 09 2018 *)

Crossrefs

Sequence in context: A157644 A107223 A194152 * A161570 A140089 A183444

Adjacent sequences: A044430 A044431 A044432 * A044434 A044435 A044436

Keyword

nonn,base

Author

Clark Kimberling

Status

approved