A044648 Numbers n such that string 1,7 occurs in the base 9 representation of n but not of n+1.

16, 97, 152, 178, 259, 340, 421, 502, 583, 664, 745, 826, 881, 907, 988, 1069, 1150, 1231, 1376, 1393, 1474, 1555, 1610, 1636, 1717, 1798, 1879, 1960, 2041, 2122, 2203, 2284, 2339, 2365, 2446, 2527, 2608, 2689, 2770, 2851

Offset

1,1

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Mathematica

SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 9], {1, 7}]>0, 1, 0], {n, 3000}], {1, 0}][[;; , 1]] (* Harvey P. Dale, Feb 01 2025 *)

Crossrefs

Sequence in context: A014352 A083295 A044267 * A041488 A277225 A265841

Adjacent sequences: A044645 A044646 A044647 * A044649 A044650 A044651

Keyword

nonn,base,changed

Author

Clark Kimberling

Status

approved