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Search: id:A138954
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| A138954 |
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Number of complement symmetries in the rotations of the binary expansion of a number. |
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+0
2
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| 0, 0, 1, 0, 0, 0, 0, 0, 1, 2, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0
(list; graph; listen)
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OFFSET
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0,10
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COMMENT
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It seems that the number of complement rotational symmetries is nonzero iff #0 = #1 in the binary expansion of a number.
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EXAMPLE
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a(2) = 1 because 2 has binary expansion 10 and the complement shows up once in rotations;
a(10) = 2 because 10 has binary expanasion 1010 and its complement shows up twice in rotations.
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CROSSREFS
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Cf. A138904.
Sequence in context: A008551 A027652 A127282 this_sequence A064530 A037047 A118917
Adjacent sequences: A138951 A138952 A138953 this_sequence A138955 A138956 A138957
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KEYWORD
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easy,nonn
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AUTHOR
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Max Sills (maxwell.sills(AT)case.edu), Apr 03 2008
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