A044056 Numbers n such that string 1,1 occurs in the base 3 representation of n but not of n-1.

4, 12, 22, 31, 36, 49, 58, 66, 76, 85, 93, 103, 108, 139, 147, 157, 166, 174, 184, 193, 198, 211, 220, 228, 238, 247, 255, 265, 274, 279, 292, 301, 309, 319, 324, 409, 417, 427, 436, 441, 454, 463, 471, 481, 490, 498, 508, 517

Offset

1,1

Links

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

Mathematica

SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 3], {1, 1}]>0, 1, 0], {n, 600}], {0, 1}][[;; , 2]] (* Harvey P. Dale, Apr 12 2024 *)

Crossrefs

Sequence in context: A057309 A063246 A301269 * A024993 A301099 A301131

Adjacent sequences: A044053 A044054 A044055 * A044057 A044058 A044059

Keyword

nonn,base

Author

Clark Kimberling

Status

approved