A031454 Numbers whose base-3 representation has 2 more 0's than 2's.

9, 28, 30, 36, 54, 83, 85, 87, 91, 93, 99, 109, 111, 117, 135, 163, 165, 171, 189, 248, 250, 254, 256, 258, 262, 264, 272, 274, 276, 280, 282, 288, 298, 300, 306, 326, 328, 330, 334, 336, 342, 352, 354, 360, 378, 406, 408, 414

Offset

1,1

Links

Table of n, a(n) for n=1..48.

Mathematica

Select[Range@500, (s=#; Differences[Count[IntegerDigits[s, 3], #]&/@{0, 2}]=={-2})&] (* Giorgos Kalogeropoulos, Jul 04 2021 *)

Crossrefs

Cf. A007089.

Sequence in context: A033479 A254139 A034116 * A044999 A155473 A127629

Adjacent sequences: A031451 A031452 A031453 * A031455 A031456 A031457

Keyword

nonn,base

Author

Clark Kimberling

Status

approved