A043582 Numbers whose base-3 representation has exactly 2 runs.

3, 5, 6, 7, 9, 12, 14, 17, 18, 22, 24, 25, 27, 36, 39, 41, 44, 53, 54, 67, 72, 76, 78, 79, 81, 108, 117, 120, 122, 125, 134, 161, 162, 202, 216, 229, 234, 238, 240, 241, 243, 324, 351, 360, 363, 365, 368, 377, 404, 485, 486, 607, 648

Offset

1,1

Links

Table of n, a(n) for n=1..53.

Mathematica

Select[Range[700], Length[Split[IntegerDigits[#, 3]]]==2&] (* Harvey P. Dale, May 07 2019 *)

Crossrefs

Cf. A007089.

Sequence in context: A043692 A043775 A043778 * A043782 A043787 A043793

Adjacent sequences: A043579 A043580 A043581 * A043583 A043584 A043585

Keyword

nonn,base

Author

Clark Kimberling

Status

approved