A044280 Numbers k such that the string 3,2 occurs in the base 9 representation of k but not of k-1.

29, 110, 191, 261, 272, 353, 434, 515, 596, 677, 758, 839, 920, 990, 1001, 1082, 1163, 1244, 1325, 1406, 1487, 1568, 1649, 1719, 1730, 1811, 1892, 1973, 2054, 2135, 2216, 2297, 2349, 2448, 2459, 2540, 2621, 2702, 2783, 2864, 2945, 3026, 3107, 3177, 3188, 3269, 3350

Offset

1,1

Links

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

Mathematica

A044280Q[k_] := StringContainsQ[IntegerString[k, 9], "32"] && StringFreeQ[IntegerString[k - 1, 9], "32"];
Select[Range[5000], A044280Q] (* Paolo Xausa, Oct 02 2025 *)

Crossrefs

Cf. A007095.

Sequence in context: A139983 A157184 A232783 * A044661 A010017 A256648

Adjacent sequences: A044277 A044278 A044279 * A044281 A044282 A044283

Keyword

nonn,base

Author

Clark Kimberling

Extensions

More terms from Paolo Xausa, Oct 02 2025

Status

approved