A044306 - OEIS

A044306

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

55, 136, 217, 298, 379, 460, 495, 541, 622, 703, 784, 865, 946, 1027, 1108, 1189, 1224, 1270, 1351, 1432, 1513, 1594, 1675, 1756, 1837, 1918, 1953, 1999, 2080, 2161, 2242, 2323, 2404, 2485, 2566, 2647, 2682, 2728, 2809

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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, 1}]>0, 1, 0], {n, 3000}], {0, 1}][[All, 2]] (* Harvey P. Dale, Sep 06 2022 *)

CROSSREFS

Sequence in context: A046156 A224459 A218161 * A044687 A250578 A130745

Adjacent sequences: A044303 A044304 A044305 * A044307 A044308 A044309

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved