A044109 - OEIS

A044109

Numbers k such that string 1,1 occurs in the base 6 representation of k but not of k-1.

7, 42, 79, 115, 151, 187, 223, 252, 295, 331, 367, 403, 439, 474, 511, 547, 583, 619, 655, 690, 727, 763, 799, 835, 871, 906, 943, 979, 1015, 1051, 1087, 1122, 1159, 1195, 1231, 1267, 1303, 1338, 1375, 1411, 1447, 1483, 1512, 1735, 1770, 1807, 1843, 1879, 1915, 1951

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

OFFSET

1,1

LINKS

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

MATHEMATICA

A044109Q[k_] := StringContainsQ[IntegerString[k, 6], "11"] && StringFreeQ[IntegerString[k - 1, 6], "11"];

Select[Range[5000], A044109Q] (* Paolo Xausa, Sep 22 2025 *)

CROSSREFS

Cf. A007092.

Sequence in context: A225327 A102532 A297405 * A195320 A110451 A212144

Adjacent sequences: A044106 A044107 A044108 * A044110 A044111 A044112