A044564 Numbers n such that string 6,3 occurs in the base 7 representation of n but not of n+1.

45, 94, 143, 192, 241, 290, 321, 339, 388, 437, 486, 535, 584, 633, 664, 682, 731, 780, 829, 878, 927, 976, 1007, 1025, 1074, 1123, 1172, 1221, 1270, 1319, 1350, 1368, 1417, 1466, 1515, 1564, 1613, 1662, 1693, 1711, 1760, 1809

Offset

1,1

Links

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

Mathematica

SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 7], {6, 3}]>0, 1, 0], {n, 2000}], {1, 0}][[All, 1]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Oct 07 2018 *)

Crossrefs

Sequence in context: A124017 A121925 A044183 * A320884 A324460 A118090

Adjacent sequences: A044561 A044562 A044563 * A044565 A044566 A044567

Keyword

nonn,base

Author

Clark Kimberling

Status

approved