A044299 Numbers k such that the string 5,3 occurs in the base 9 representation of k but not of k-1.

48, 129, 210, 291, 372, 432, 453, 534, 615, 696, 777, 858, 939, 1020, 1101, 1161, 1182, 1263, 1344, 1425, 1506, 1587, 1668, 1749, 1830, 1890, 1911, 1992, 2073, 2154, 2235, 2316, 2397, 2478, 2559, 2619, 2640, 2721, 2802, 2883, 2964, 3045, 3126, 3207, 3288, 3348, 3369

Offset

1,1

Links

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

Mathematica

A044299Q[k_] := StringContainsQ[IntegerString[k, 9], "53"] && StringFreeQ[IntegerString[k - 1, 9], "53"];
Select[Range[5000], A044299Q] (* Paolo Xausa, Oct 06 2025 *)

Crossrefs

Cf. A007095.

Sequence in context: A194952 A260362 A114444 * A044680 A211500 A295428

Adjacent sequences: A044296 A044297 A044298 * A044300 A044301 A044302

Keyword

nonn,base

Author

Clark Kimberling

Extensions

More terms from Paolo Xausa, Oct 06 2025

Status

approved