A044395 - OEIS

A044395

Numbers n such that string 6,3 occurs in the base 10 representation of n but not of n-1.

63, 163, 263, 363, 463, 563, 630, 663, 763, 863, 963, 1063, 1163, 1263, 1363, 1463, 1563, 1630, 1663, 1763, 1863, 1963, 2063, 2163, 2263, 2363, 2463, 2563, 2630, 2663, 2763, 2863, 2963, 3063, 3163, 3263, 3363, 3463, 3563

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OFFSET

1,1

LINKS

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

MATHEMATICA

SequencePosition[Table[If[SequenceCount[IntegerDigits[n], {6, 3}]>0, 1, 0], {n, 3600}], {0, 1}][[All, 2]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Apr 08 2020 *)

CROSSREFS

Sequence in context: A044695 A211850 A330433 * A044776 A077263 A098140

Adjacent sequences: A044392 A044393 A044394 * A044396 A044397 A044398

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved