A044692 - OEIS

A044692

Numbers n such that string 6,6 occurs in the base 9 representation of n but not of n+1.

60, 141, 222, 303, 384, 465, 548, 627, 708, 789, 870, 951, 1032, 1113, 1194, 1277, 1356, 1437, 1518, 1599, 1680, 1761, 1842, 1923, 2006, 2085, 2166, 2247, 2328, 2409, 2490, 2571, 2652, 2735, 2814, 2895, 2976, 3057, 3138

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OFFSET

1,1

LINKS

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

MATHEMATICA

SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 9], {6, 6}]>0, 1, 0], {n, 3500}], {1, 0}][[All, 1]] (* Harvey P. Dale, Aug 12 2022 *)

CROSSREFS

Sequence in context: A221990 A043478 A044311 * A211332 A039497 A218243

Adjacent sequences: A044689 A044690 A044691 * A044693 A044694 A044695

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved