login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

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