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A043858 Numbers n such that number of runs in the base 4 representation of n is congruent to 0 mod 9. 1
69905, 69906, 69907, 69912, 69913, 69915, 69916, 69917, 69918, 69921, 69922, 69923, 69924, 69926, 69927, 69932, 69933, 69934, 69937, 69938, 69939, 69940, 69942, 69943, 69944, 69945, 69947, 70020, 70022, 70023 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..30.

MATHEMATICA

Select[Range[80000], Mod[Length[Split[IntegerDigits[#, 4]]], 9]==0&] (* Harvey P. Dale, Oct 01 2018 *)

CROSSREFS

Sequence in context: A116502 A190934 A043600 * A043876 A224464 A233987

Adjacent sequences:  A043855 A043856 A043857 * A043859 A043860 A043861

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified February 28 09:24 EST 2021. Contains 341695 sequences. (Running on oeis4.)