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A045042
Numbers whose base-4 representation contains exactly one 0 and no 2's.
0
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
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
KEYWORD
nonn,base
EXTENSIONS
a(1) = 0 inserted by Georg Fischer, Jun 28 2019
STATUS
approved