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Search: id:A059662
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| A059662 |
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Positions of the flipped bits (here they are always set from 0 to 1) in the sequence A059661. |
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+0
1
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| 0, 2, 4, 3, 12, 5, 14, 27, 8, 25, 30, 31, 36, 13, 18, 131, 60, 133, 458, 247
(list; graph; listen)
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OFFSET
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1,2
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COMMENT
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E.g. starting from A059661[1] = 2, flip (set) bit 0, gives A059661[2] = 3 (= 2+2^0), set bit 2, gives A059661[3] = 7 (3+2^2), set bit 4, gives A059661[4] = 23 (7+2^4), etc.
Question: If A059661 could be extended infinitely, would all the natural numbers > 1 eventually appear here once?
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MAPLE
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map(floor_log_2, map(abs, DIFF(A059661))); # For floor_log_2, which essentially computes log[2](x) here, see A054429
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CROSSREFS
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Sequence in context: A093839 A096780 A143986 this_sequence A114883 A125091 A091861
Adjacent sequences: A059659 A059660 A059661 this_sequence A059663 A059664 A059665
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KEYWORD
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nonn,more
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AUTHOR
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Antti Karttunen Feb 03 2001
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