A043600 Numbers whose base-4 representation has exactly 9 runs.

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

Offset

1,1

Links

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

Mathematica

Select[Range[71000], Length[Split[IntegerDigits[#, 4]]]==9&] (* Harvey P. Dale, May 23 2017 *)

Crossrefs

Cf. A007090.

Subsequence of A043876, A043858.

Sequence in context: A069919 A116502 A190934 * A043858 A043876 A224464

Adjacent sequences: A043597 A043598 A043599 * A043601 A043602 A043603

Keyword

nonn,base,changed

Author

Clark Kimberling

Status

approved