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A044803 Numbers n such that string 9,0 occurs in the base 10 representation of n but not of n+1. 0
90, 190, 290, 390, 490, 590, 690, 790, 890, 909, 990, 1090, 1190, 1290, 1390, 1490, 1590, 1690, 1790, 1890, 1909, 1990, 2090, 2190, 2290, 2390, 2490, 2590, 2690, 2790, 2890, 2909, 2990, 3090, 3190, 3290, 3390, 3490, 3590 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

MATHEMATICA

SequencePosition[Table[If[SequenceCount[IntegerDigits[n], {9, 0}]>0, 1, 0], {n, 3600}], {1, 0}][[All, 1]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Jul 08 2019 *)

CROSSREFS

Sequence in context: A211442 A282473 A044422 * A235081 A074213 A231961

Adjacent sequences:  A044800 A044801 A044802 * A044804 A044805 A044806

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified November 27 09:19 EST 2021. Contains 349365 sequences. (Running on oeis4.)