A044577 Numbers n such that string 1,1 occurs in the base 8 representation of n but not of n+1.

9, 79, 137, 201, 265, 329, 393, 457, 521, 639, 649, 713, 777, 841, 905, 969, 1033, 1103, 1161, 1225, 1289, 1353, 1417, 1481, 1545, 1615, 1673, 1737, 1801, 1865, 1929, 1993, 2057, 2127, 2185, 2249, 2313, 2377, 2441, 2505

Offset

1,1

Links

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

Mathematica

SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 8], {1, 1}]>0, 1, 0], {n, 3000}], {1, 0}][[All, 1]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Feb 26 2020 *)

Crossrefs

Sequence in context: A240797 A279683 A123918 * A357281 A172203 A293721

Adjacent sequences: A044574 A044575 A044576 * A044578 A044579 A044580

Keyword

nonn,base

Author

Clark Kimberling

Status

approved