A044777 Numbers n such that string 6,4 occurs in the base 10 representation of n but not of n+1.

64, 164, 264, 364, 464, 564, 649, 664, 764, 864, 964, 1064, 1164, 1264, 1364, 1464, 1564, 1649, 1664, 1764, 1864, 1964, 2064, 2164, 2264, 2364, 2464, 2564, 2649, 2664, 2764, 2864, 2964, 3064, 3164, 3264, 3364, 3464, 3564

Offset

1,1

Links

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

Mathematica

SequencePosition[Table[If[SequenceCount[IntegerDigits[n], {6, 4}]>0, 1, 0], {n, 4000}], {1, 0}][[All, 1]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Jul 15 2019 *)

Crossrefs

Sequence in context: A195233 A086052 A044396 * A251077 A228666 A209379

Adjacent sequences: A044774 A044775 A044776 * A044778 A044779 A044780

Keyword

nonn,base

Author

Clark Kimberling

Status

approved