A045080 Numbers whose base-4 representation contains exactly three 0's and four 3's.

12351, 12495, 12531, 12540, 13071, 13107, 13116, 13251, 13260, 13296, 15375, 15411, 15420, 15555, 15564, 15600, 16131, 16140, 16176, 16320, 16639, 17215, 17359, 17395, 17404, 19519, 19663, 19699, 19708, 20239

Offset

1,1

Links

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

Mathematica

Select[Range[25000], DigitCount[#, 4, 0]==3&&DigitCount[#, 4, 3]==4&] (* Harvey P. Dale, Jan 28 2013 *)

Crossrefs

Cf. A007090.

Sequence in context: A077298 A255964 A274247 * A238051 A234919 A183693

Adjacent sequences: A045077 A045078 A045079 * A045081 A045082 A045083

Keyword

nonn,base

Author

Clark Kimberling

Status

approved