A045138 Numbers whose base-4 representation contains exactly one 2 and no 3's.

2, 6, 8, 9, 18, 22, 24, 25, 32, 33, 36, 37, 66, 70, 72, 73, 82, 86, 88, 89, 96, 97, 100, 101, 128, 129, 132, 133, 144, 145, 148, 149, 258, 262, 264, 265, 274, 278, 280, 281, 288, 289, 292, 293, 322, 326, 328, 329, 338, 342, 344, 345

Offset

1,1

Links

Table of n, a(n) for n=1..52.

Mathematica

Select[Range[400], DigitCount[#, 4, 2]==1&&DigitCount[#, 4, 3]==0&] (* Harvey P. Dale, Mar 14 2023 *)

Crossrefs

Cf. A007090.

Sequence in context: A242204 A172209 A107737 * A067704 A284889 A192125

Adjacent sequences: A045135 A045136 A045137 * A045139 A045140 A045141

Keyword

nonn,base

Author

Clark Kimberling

Status

approved