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A033055
Numbers whose base-4 representation Sum_{i=0..m} d(i)*4^i has odd d(i) for all odd i.
0
1, 2, 3, 5, 7, 9, 11, 13, 15, 20, 21, 22, 23, 28, 29, 30, 31, 36, 37, 38, 39, 44, 45, 46, 47, 52, 53, 54, 55, 60, 61, 62, 63, 81, 83, 85, 87, 89, 91, 93, 95, 113, 115, 117, 119, 121, 123, 125, 127, 145, 147, 149, 151, 153, 155, 157, 159
OFFSET
1,2
CROSSREFS
Sequence in context: A256212 A360107 A096149 * A287374 A186390 A022554
KEYWORD
nonn,base
STATUS
approved