A044772 - OEIS

A044772

Numbers n such that string 5,9 occurs in the base 10 representation of n but not of n+1.

59, 159, 259, 359, 459, 559, 599, 659, 759, 859, 959, 1059, 1159, 1259, 1359, 1459, 1559, 1599, 1659, 1759, 1859, 1959, 2059, 2159, 2259, 2359, 2459, 2559, 2599, 2659, 2759, 2859, 2959, 3059, 3159, 3259, 3359, 3459, 3559

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..39.

MATHEMATICA

SequencePosition[Table[If[SequenceCount[IntegerDigits[n], {5, 9}]>0, 1, 0], {n, 4000}], {1, 0}][[All, 1]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Jan 13 2019 *)

CROSSREFS

Sequence in context: A142422 A255352 A044391 * A341659 A279099 A142799

Adjacent sequences: A044769 A044770 A044771 * A044773 A044774 A044775

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved