A044700 Numbers k such that string 7,5 occurs in the base 9 representation of k but not of k+1.

68, 149, 230, 311, 392, 473, 554, 620, 635, 716, 797, 878, 959, 1040, 1121, 1202, 1283, 1349, 1364, 1445, 1526, 1607, 1688, 1769, 1850, 1931, 2012, 2078, 2093, 2174, 2255, 2336, 2417, 2498, 2579, 2660, 2741, 2807, 2822

Offset

1,1

Links

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

Mathematica

SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 9], {7, 5}]>0, 1, 0], {n, 3000}], {1, 0}][[;; , 1]] (* Harvey P. Dale, Mar 09 2026 *)

Crossrefs

Cf. A007095.

Sequence in context: A153677 A234876 A044319 * A063341 A118214 A211687

Adjacent sequences: A044697 A044698 A044699 * A044701 A044702 A044703

Keyword

nonn,base

Author

Clark Kimberling

Status

approved