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A045120
Numbers whose base-4 representation contains exactly two 1's and one 3.
0
23, 29, 53, 71, 77, 83, 91, 92, 94, 103, 109, 113, 116, 118, 121, 151, 157, 181, 197, 209, 212, 214, 217, 229, 263, 269, 275, 283, 284, 286, 295, 301, 305, 308, 310, 313, 323, 331, 332, 334, 355, 363, 364, 366, 368, 370, 376, 378
OFFSET
1,1
CROSSREFS
Cf. A007090.
Sequence in context: A108249 A338324 A232725 * A174260 A097436 A063980
KEYWORD
nonn,base
STATUS
approved