A044246 Numbers k such that string 7,3 occurs in the base 8 representation of k but not of k-1.

59, 123, 187, 251, 315, 379, 443, 472, 507, 571, 635, 699, 763, 827, 891, 955, 984, 1019, 1083, 1147, 1211, 1275, 1339, 1403, 1467, 1496, 1531, 1595, 1659, 1723, 1787, 1851, 1915, 1979, 2008, 2043, 2107, 2171, 2235, 2299, 2363

Offset

1,1

Links

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

Mathematica

A044246Q[k_] := StringContainsQ[IntegerString[k, 8], "73"] && StringFreeQ[IntegerString[k - 1, 8], "73"];
Select[Range[5000], A044246Q] (* Paolo Xausa, Sep 03 2025 *)

Crossrefs

Sequence in context: A180947 A060259 A141934 * A044627 A050230 A138633

Adjacent sequences: A044243 A044244 A044245 * A044247 A044248 A044249

Keyword

nonn,base

Author

Clark Kimberling

Status

approved