A044079 Numbers k such that string 0,2 occurs in the base 5 representation of k but not of k-1.

27, 52, 77, 102, 127, 135, 152, 177, 202, 227, 252, 260, 277, 302, 327, 352, 377, 385, 402, 427, 452, 477, 502, 510, 527, 552, 577, 602, 627, 635, 652, 675, 702, 727, 752, 760, 777, 802, 827, 852, 877, 885, 902, 927, 952, 977, 1002, 1010, 1027, 1052, 1077, 1102, 1127

Offset

1,1

Links

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

Mathematica

A044079Q[k_] := StringContainsQ[IntegerString[k, 5], "02"] && StringFreeQ[IntegerString[k - 1, 5], "02"];
Select[Range[5000], A044079Q] (* Paolo Xausa, Sep 23 2025 *)

Crossrefs

Cf. A007091.

Sequence in context: A154591 A217235 A265683 * A044460 A160845 A216224

Adjacent sequences: A044076 A044077 A044078 * A044080 A044081 A044082

Keyword

nonn,base

Author

Clark Kimberling

Extensions

More terms from Paolo Xausa, Sep 23 2025

Status

approved