login
A045124
Numbers whose base-4 representation contains exactly three 1's and no 3's.
0
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
CROSSREFS
Cf. A007090.
Sequence in context: A272627 A043339 A023712 * A045100 A038471 A224072
KEYWORD
nonn,base
STATUS
approved