A031467 Numbers whose base-4 representation has 2 fewer 0's than 3's.

15, 31, 47, 55, 59, 61, 62, 95, 111, 119, 123, 125, 126, 159, 175, 183, 187, 189, 190, 207, 215, 219, 221, 222, 231, 235, 237, 238, 243, 245, 246, 249, 250, 252, 319, 351, 367, 375, 379, 381, 382, 415, 431, 439, 443, 445, 446

Offset

1,1

Links

Table of n, a(n) for n=1..47.

Mathematica

Select[Range[500], DigitCount[#, 4, 0]==DigitCount[#, 4, 3]-2&] (* Harvey P. Dale, Oct 08 2020 *)

Crossrefs

Cf. A007090.

Sequence in context: A042017 A043346 A023719 * A045063 A044076 A319282

Adjacent sequences: A031464 A031465 A031466 * A031468 A031469 A031470

Keyword

nonn,base

Author

Clark Kimberling

Status

approved