A045042 Numbers whose base-4 representation contains exactly one 0 and no 2's.

0, 4, 12, 17, 19, 20, 28, 49, 51, 52, 60, 69, 71, 77, 79, 81, 83, 84, 92, 113, 115, 116, 124, 197, 199, 205, 207, 209, 211, 212, 220, 241, 243, 244, 252, 277, 279, 285, 287, 309, 311, 317, 319, 325, 327, 333, 335, 337, 339, 340, 348

Offset

1,2

Links

Table of n, a(n) for n=1..51.

Mathematica

Select[Range[0, 400], DigitCount[#, 4, 0]==1&&DigitCount[#, 4, 2]==0&] (* Harvey P. Dale, Oct 22 2015 *)

Crossrefs

Cf. A007090.

Sequence in context: A048661 A036047 A356812 * A367930 A095099 A134860

Adjacent sequences: A045039 A045040 A045041 * A045043 A045044 A045045

Keyword

nonn,base

Author

Clark Kimberling

Extensions

a(1) = 0 inserted by Georg Fischer, Jun 28 2019

Status

approved