A045040 Numbers whose base-4 representation contains no 0's and exactly three 2's.

42, 106, 154, 166, 169, 171, 174, 186, 234, 362, 410, 422, 425, 427, 430, 442, 490, 602, 614, 617, 619, 622, 634, 662, 665, 667, 670, 677, 679, 685, 687, 694, 697, 699, 702, 730, 742, 745, 747, 750, 762, 874, 922, 934, 937, 939

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..6000

Mathematica

Select[Range[20000], DigitCount[#, 4, 0] == 0 && DigitCount[#, 4, 2] == 3 &] (* Vincenzo Librandi, Sep 23 2016 *)

Crossrefs

Cf. A007090.

Sequence in context: A075296 A023716 A045148 * A044229 A044610 A335064

Adjacent sequences: A045037 A045038 A045039 * A045041 A045042 A045043

Keyword

nonn,base

Author

Clark Kimberling

Status

approved