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A043712

Numbers whose base-9 representation has an odd number of runs.

1, 2, 3, 4, 5, 6, 7, 8, 10, 20, 30, 40, 50, 60, 70, 80, 82, 83, 84, 85, 86, 87, 88, 89, 91, 99, 100, 102, 103, 104, 105, 106, 107, 108, 109, 110, 112, 113, 114, 115, 116, 117, 118, 119, 120, 122, 123, 124, 125, 126, 127, 128, 129, 130

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OFFSET

1,2

LINKS

Table of n, a(n) for n=1..54.

MATHEMATICA

Select[Range[200], OddQ[Length[Split[IntegerDigits[#, 9]]]]&] (* Harvey P. Dale, Nov 08 2012 *)

CROSSREFS

Sequence in context: A297145 A044820 A048306 * A296709 A029955 A297268

Adjacent sequences: A043709 A043710 A043711 * A043713 A043714 A043715

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

URL: https://oeis.org/A043712

⇱ A043712 - OEIS