A044653 - OEIS

A044653

Numbers n such that string 2,3 occurs in the base 9 representation of n but not of n+1.

21, 102, 183, 197, 264, 345, 426, 507, 588, 669, 750, 831, 912, 926, 993, 1074, 1155, 1236, 1317, 1398, 1479, 1560, 1641, 1655, 1781, 1803, 1884, 1965, 2046, 2127, 2208, 2289, 2370, 2384, 2451, 2532, 2613, 2694, 2775, 2856

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..40.

MATHEMATICA

SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 9], {2, 3}]>0, 1, 0], {n, 3000}], {1, 0}][[All, 1]] (* Harvey P. Dale, Aug 07 2022 *)

CROSSREFS

Sequence in context: A157329 A356738 A044272 * A076454 A208538 A303681

Adjacent sequences: A044650 A044651 A044652 * A044654 A044655 A044656

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved