A044566 Numbers n such that string 6,5 occurs in the base 7 representation of n but not of n+1.

47, 96, 145, 194, 243, 292, 335, 341, 390, 439, 488, 537, 586, 635, 678, 684, 733, 782, 831, 880, 929, 978, 1021, 1027, 1076, 1125, 1174, 1223, 1272, 1321, 1364, 1370, 1419, 1468, 1517, 1566, 1615, 1664, 1707, 1713, 1762, 1811

Offset

1,1

Links

Table of n, a(n) for n=1..42.

Mathematica

SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 7], {6, 5}]>0, 1, 0], {n, 2000}], {1, 0}][[All, 1]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Jun 09 2019 *)

Crossrefs

Sequence in context: A061153 A335076 A044185 * A349231 A141944 A281437

Adjacent sequences: A044563 A044564 A044565 * A044567 A044568 A044569

Keyword

nonn,base

Author

Clark Kimberling

Status

approved