A044087 Numbers n such that string 2,0 occurs in the base 5 representation of n but not of n-1.

10, 35, 50, 60, 85, 110, 135, 160, 175, 185, 210, 235, 250, 285, 300, 310, 335, 360, 385, 410, 425, 435, 460, 485, 510, 535, 550, 560, 585, 610, 635, 660, 675, 685, 710, 735, 760, 785, 800, 810, 835, 860, 875, 910, 925, 935, 960

Offset

1,1

Links

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

Mathematica

SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 5], {2, 0}]>0, 1, 0], {n, 1000}], {0, 1}][[All, 2]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Apr 29 2017 *)

Crossrefs

Sequence in context: A243939 A065195 A115149 * A022702 A044468 A355491

Adjacent sequences: A044084 A044085 A044086 * A044088 A044089 A044090

Keyword

nonn,base

Author

Clark Kimberling

Status

approved