A044267 Numbers n such that string 1,7 occurs in the base 9 representation of n but not of n-1.

16, 97, 144, 178, 259, 340, 421, 502, 583, 664, 745, 826, 873, 907, 988, 1069, 1150, 1231, 1296, 1393, 1474, 1555, 1602, 1636, 1717, 1798, 1879, 1960, 2041, 2122, 2203, 2284, 2331, 2365, 2446, 2527, 2608, 2689, 2770, 2851

Offset

1,1

Links

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

Mathematica

SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 9], {1, 7}]>0, 1, 0], {n, 3000}], {0, 1}][[;; , 2]] (* Harvey P. Dale, Sep 07 2024 *)

Crossrefs

Sequence in context: A322617 A014352 A083295 * A044648 A041488 A277225

Adjacent sequences: A044264 A044265 A044266 * A044268 A044269 A044270

Keyword

nonn,base

Author

Clark Kimberling

Status

approved