A044323 - OEIS

A044323

Numbers k such that the string 8,0 occurs in the base 9 representation of k but not of k-1.

72, 153, 234, 315, 396, 477, 558, 639, 648, 720, 801, 882, 963, 1044, 1125, 1206, 1287, 1368, 1377, 1449, 1530, 1611, 1692, 1773, 1854, 1935, 2016, 2097, 2106, 2178, 2259, 2340, 2421, 2502, 2583, 2664, 2745, 2826, 2835, 2907, 2988, 3069, 3150, 3231, 3312, 3393, 3474

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

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

MATHEMATICA

A044323Q[k_] := StringContainsQ[IntegerString[k, 9], "80"] && StringFreeQ[IntegerString[k - 1, 9], "80"];

Select[Range[5000], A044323Q] (* Paolo Xausa, Oct 07 2025 *)

CROSSREFS

Cf. A007095.

Sequence in context: A039498 A063357 A240247 * A044704 A302364 A208087

Adjacent sequences: A044320 A044321 A044322 * A044324 A044325 A044326