A044654 - OEIS

A044654

Numbers n such that string 2,4 occurs in the base 9 representation of n but not of n+1.

22, 103, 184, 206, 265, 346, 427, 508, 589, 670, 751, 832, 913, 935, 994, 1075, 1156, 1237, 1318, 1399, 1480, 1561, 1642, 1664, 1723, 1862, 1885, 1966, 2047, 2128, 2209, 2290, 2371, 2393, 2452, 2533, 2614, 2695, 2776, 2857

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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, 4}]>0, 1, 0], {n, 3000}], {1, 0}][[All, 1]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Apr 14 2019 *)

CROSSREFS

Sequence in context: A262329 A264852 A044273 * A156795 A095265 A060382

Adjacent sequences: A044651 A044652 A044653 * A044655 A044656 A044657

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved