A044125 Numbers n such that string 3,5 occurs in the base 6 representation of n but not of n-1.

23, 59, 95, 131, 138, 167, 203, 239, 275, 311, 347, 354, 383, 419, 455, 491, 527, 563, 570, 599, 635, 671, 707, 743, 779, 786, 815, 828, 887, 923, 959, 995, 1002, 1031, 1067, 1103, 1139, 1175, 1211, 1218, 1247, 1283, 1319, 1355, 1391, 1427, 1434, 1463, 1499

Offset

1,1

Links

Table of n, a(n) for n=1..49.

Mathematica

f[n_] := Length[StringPosition[ToString[FromDigits[IntegerDigits[n, 6]]], "35", 1]]; Select[Table[n, {n, 10000}], f[#] > 0 && f[# - 1] == 0 &] (* Vladimir Joseph Stephan Orlovsky, Jul 20 2011 *)

Crossrefs

Cf. A044506.

Sequence in context: A225550 A179629 A274381 * A044506 A033217 A142107

Adjacent sequences: A044122 A044123 A044124 * A044126 A044127 A044128

Keyword

nonn,base

Author

Clark Kimberling

Status

approved