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A043712 Numbers n such that number of runs in the base 9 representation of n is odd. 2
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 (list; graph; refs; listen; history; text; internal format)
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: A044820 A297145 A048306 * A296709 A029955 A297268

Adjacent sequences:  A043709 A043710 A043711 * A043713 A043714 A043715

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified December 6 14:15 EST 2019. Contains 329806 sequences. (Running on oeis4.)