A045124 Numbers whose base-4 representation contains exactly three 1's and no 3's.

21, 69, 81, 84, 86, 89, 101, 149, 261, 273, 276, 278, 281, 293, 321, 324, 326, 329, 336, 338, 344, 346, 353, 356, 358, 361, 389, 401, 404, 406, 409, 421, 533, 581, 593, 596, 598, 601, 613, 661, 1029, 1041, 1044, 1046, 1049, 1061

Offset

1,1

Links

Table of n, a(n) for n=1..46.

Crossrefs

Cf. A007090.

Sequence in context: A272627 A043339 A023712 * A045100 A038471 A224072

Adjacent sequences: A045121 A045122 A045123 * A045125 A045126 A045127

Keyword

nonn,base

Author

Clark Kimberling

Status

approved