A044367 - OEIS

A044367

Numbers n such that string 3,5 occurs in the base 10 representation of n but not of n-1.

35, 135, 235, 335, 350, 435, 535, 635, 735, 835, 935, 1035, 1135, 1235, 1335, 1350, 1435, 1535, 1635, 1735, 1835, 1935, 2035, 2135, 2235, 2335, 2350, 2435, 2535, 2635, 2735, 2835, 2935, 3035, 3135, 3235, 3335, 3350, 3435

(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], {3, 5}]>0, 1, 0], {n, 3500}], {0, 1}][[All, 2]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Nov 19 2019 *)

CROSSREFS

Sequence in context: A120398 A339998 A039522 * A044748 A171473 A158586

Adjacent sequences: A044364 A044365 A044366 * A044368 A044369 A044370

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved