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A044097 Numbers n such that string 4,0 occurs in the base-5 representation of n but not of n-1. 1
20, 45, 70, 95, 100, 120, 145, 170, 195, 220, 225, 245, 270, 295, 320, 345, 350, 370, 395, 420, 445, 470, 475, 495, 500, 545, 570, 595, 600, 620, 645, 670, 695, 720, 725, 745, 770, 795, 820, 845, 850, 870, 895, 920, 945, 970 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1300

MATHEMATICA

Flatten[Position[Partition[If[MemberQ[Partition[IntegerDigits[#, 5], 2, 1], {4, 0}], 1, 0]&/@Range[1000], 2, 1], {0, 1}]]+1 (* Harvey P. Dale, Aug 14 2014 *)

CROSSREFS

Sequence in context: A256870 A134619 A219716 * A044478 A228319 A236474

Adjacent sequences:  A044094 A044095 A044096 * A044098 A044099 A044100

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified July 1 01:19 EDT 2022. Contains 354947 sequences. (Running on oeis4.)