A044252 Numbers k such that string 0,1 occurs in the base 9 representation of k but not of k-1.

82, 163, 244, 325, 406, 487, 568, 649, 730, 738, 811, 892, 973, 1054, 1135, 1216, 1297, 1378, 1459, 1467, 1540, 1621, 1702, 1783, 1864, 1945, 2026, 2107, 2188, 2196, 2269, 2350, 2431, 2512, 2593, 2674, 2755, 2836, 2917

Offset

1,1

Links

Paolo Xausa, Table of n, a(n) for n = 1..10000

Mathematica

A044252Q[k_] := StringContainsQ[IntegerString[k, 9], "01"] && StringFreeQ[IntegerString[k - 1, 9], "01"];
Select[Range[5000], A044252Q] (* Paolo Xausa, Sep 02 2025 *)

Crossrefs

Sequence in context: A173087 A264352 A390678 * A044633 A158123 A370951

Adjacent sequences: A044249 A044250 A044251 * A044253 A044254 A044255

Keyword

nonn,base

Author

Clark Kimberling

Status

approved