A044300 Numbers n such that string 5,4 occurs in the base 9 representation of n but not of n-1.

49, 130, 211, 292, 373, 441, 454, 535, 616, 697, 778, 859, 940, 1021, 1102, 1170, 1183, 1264, 1345, 1426, 1507, 1588, 1669, 1750, 1831, 1899, 1912, 1993, 2074, 2155, 2236, 2317, 2398, 2479, 2560, 2628, 2641, 2722, 2803

Offset

1,1

Links

Table of n, a(n) for n=1..39.

Mathematica

Flatten[Position[Partition[Table[If[MemberQ[Partition[ IntegerDigits[ n, 9], 2, 1], {5, 4}], 1, 0], {n, 3000}], 2, 1], {0, 1}]]+1 (* Harvey P. Dale, Feb 04 2015 *)

Crossrefs

Sequence in context: A080665 A130007 A202331 * A044681 A250311 A211727

Adjacent sequences: A044297 A044298 A044299 * A044301 A044302 A044303

Keyword

nonn,base

Author

Clark Kimberling

Status

approved