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A044425 Numbers n such that string 9,3 occurs in the base 10 representation of n but not of n-1. 0
93, 193, 293, 393, 493, 593, 693, 793, 893, 930, 993, 1093, 1193, 1293, 1393, 1493, 1593, 1693, 1793, 1893, 1930, 1993, 2093, 2193, 2293, 2393, 2493, 2593, 2693, 2793, 2893, 2930, 2993, 3093, 3193, 3293, 3393, 3493, 3593 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

MATHEMATICA

Transpose[SequencePosition[Table[If[SequenceCount[IntegerDigits[n], {9, 3}]>0, 1, 0], {n, 4000}], {0, 1}]][[2]] (* The program uses the SequencePosition and SequenceCount functions from Mathematica version 10 *) (* Harvey P. Dale, May 25 2016 *)

CROSSREFS

Sequence in context: A213114 A250366 A306540 * A044806 A043363 A023736

Adjacent sequences:  A044422 A044423 A044424 * A044426 A044427 A044428

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified November 27 12:51 EST 2021. Contains 349394 sequences. (Running on oeis4.)