A044506 Numbers n such that string 3,5 occurs in the base 6 representation of n but not of n+1.

23, 59, 95, 131, 143, 167, 203, 239, 275, 311, 347, 359, 383, 419, 455, 491, 527, 563, 575, 599, 635, 671, 707, 743, 779, 791, 815, 863, 887, 923, 959, 995, 1007, 1031, 1067, 1103, 1139, 1175, 1211, 1223, 1247, 1283, 1319, 1355, 1391, 1427, 1439, 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. A044125.

Sequence in context: A179629 A274381 A044125 * A033217 A142107 A107208

Adjacent sequences: A044503 A044504 A044505 * A044507 A044508 A044509

Keyword

nonn,base

Author

Clark Kimberling

Status

approved