A044682 Numbers n such that string 5,5 occurs in the base 9 representation of n but not of n+1.

50, 131, 212, 293, 374, 458, 536, 617, 698, 779, 860, 941, 1022, 1103, 1187, 1265, 1346, 1427, 1508, 1589, 1670, 1751, 1832, 1916, 1994, 2075, 2156, 2237, 2318, 2399, 2480, 2561, 2645, 2723, 2804, 2885, 2966, 3047, 3128

Offset

1,1

Links

Harvey P. Dale, Table of n, a(n) for n = 1..1000

Mathematica

SequencePosition[Table[If[SequenceCount[IntegerDigits[n, 9], {5, 5}]>0, 1, 0], {n, 3200}], {1, 0}][[All, 1]] (* Harvey P. Dale, Jul 19 2022 *)

Crossrefs

Sequence in context: A093194 A043474 A044301 * A200881 A235942 A093300

Adjacent sequences: A044679 A044680 A044681 * A044683 A044684 A044685

Keyword

nonn,base

Author

Clark Kimberling

Status

approved