A031457 - OEIS

A031457

Numbers whose base-3 representation has one fewer 0 than 2's.

2, 5, 7, 14, 16, 20, 22, 24, 35, 41, 43, 47, 49, 51, 59, 61, 65, 67, 69, 73, 75, 98, 104, 106, 116, 122, 124, 128, 130, 132, 140, 142, 146, 148, 150, 154, 156, 170, 176, 178, 182, 184, 186, 194, 196, 200, 202, 204, 208, 210, 218, 220

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..52.

MATHEMATICA

Select[Range[250], DigitCount[#, 3, 0]==DigitCount[#, 3, 2]-1&] (* Harvey P. Dale, Jun 29 2017 *)

CROSSREFS

Cf. A007089.

Sequence in context: A007438 A338205 A230301 * A044990 A266259 A133146

Adjacent sequences: A031454 A031455 A031456 * A031458 A031459 A031460

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved