A044613 Numbers n such that string 5,5 occurs in the base 8 representation of n but not of n+1.

45, 109, 173, 237, 301, 367, 429, 493, 557, 621, 685, 749, 813, 879, 941, 1005, 1069, 1133, 1197, 1261, 1325, 1391, 1453, 1517, 1581, 1645, 1709, 1773, 1837, 1903, 1965, 2029, 2093, 2157, 2221, 2285, 2349, 2415, 2477, 2541

Offset

1,1

Links

Table of n, a(n) for n=1..40.

Mathematica

SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 8], {5, 5}]>0, 1, 0], {n, 2600}], {1, 0}][[All, 1]] (* Harvey P. Dale, Apr 30 2022 *)

Crossrefs

Sequence in context: A180971 A043442 A044232 * A039528 A228058 A351533

Adjacent sequences: A044610 A044611 A044612 * A044614 A044615 A044616

Keyword

nonn,base

Author

Clark Kimberling

Status

approved