A044328 Numbers k such that the string 8,5 occurs in the base 9 representation of k but not of k-1.

77, 158, 239, 320, 401, 482, 563, 644, 693, 725, 806, 887, 968, 1049, 1130, 1211, 1292, 1373, 1422, 1454, 1535, 1616, 1697, 1778, 1859, 1940, 2021, 2102, 2151, 2183, 2264, 2345, 2426, 2507, 2588, 2669, 2750, 2831, 2880, 2912, 2993, 3074, 3155, 3236, 3317, 3398, 3479

Offset

1,1

Links

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

Mathematica

A044328Q[k_] := StringContainsQ[IntegerString[k, 9], "85"] && StringFreeQ[IntegerString[k - 1, 9], "85"];
Select[Range[5000], A044328Q] (* Paolo Xausa, Oct 08 2025 *)

Crossrefs

Cf. A007095, A044709.

Sequence in context: A004964 A118226 A113945 * A044709 A338189 A308963

Adjacent sequences: A044325 A044326 A044327 * A044329 A044330 A044331

Keyword

nonn,base

Author

Clark Kimberling

Extensions

More terms from Paolo Xausa, Oct 08 2025

Status

approved