A044562 Numbers n such that string 6,1 occurs in the base 7 representation of n but not of n+1.

43, 92, 141, 190, 239, 288, 307, 337, 386, 435, 484, 533, 582, 631, 650, 680, 729, 778, 827, 876, 925, 974, 993, 1023, 1072, 1121, 1170, 1219, 1268, 1317, 1336, 1366, 1415, 1464, 1513, 1562, 1611, 1660, 1679, 1709, 1758, 1807

Offset

1,1

Links

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

Mathematica

SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 7], {6, 1}]>0, 1, 0], {n, 2000}], {1, 0}][[;; , 1]] (* Harvey P. Dale, Mar 05 2023 *)

Crossrefs

Sequence in context: A122617 A306114 A044181 * A060323 A141958 A141990

Adjacent sequences: A044559 A044560 A044561 * A044563 A044564 A044565

Keyword

nonn,base

Author

Clark Kimberling

Status

approved