A044060 Numbers n such that string 2,2 occurs in the base 3 representation of n but not of n-1.

8, 17, 24, 35, 44, 51, 62, 71, 89, 98, 105, 116, 125, 132, 143, 152, 170, 179, 186, 197, 206, 213, 251, 260, 267, 278, 287, 294, 305, 314, 332, 341, 348, 359, 368, 375, 386, 395, 413, 422, 429, 440, 449, 456, 494, 503, 510, 521

Offset

1,1

Links

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

Mathematica

SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 3], {2, 2}]>0, 1, 0], {n, 600}], {0, 1}][[All, 2]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Oct 29 2017 *)

Crossrefs

Sequence in context: A063594 A110474 A118066 * A121283 A046464 A022390

Adjacent sequences: A044057 A044058 A044059 * A044061 A044062 A044063

Keyword

nonn,base

Author

Clark Kimberling

Status

approved