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 A117303 Self-inverse permutation of the natural numbers based on the bijection (2*x-1)*2^(y-1) <--> (2*y-1)*2^(x-1). 6
 1, 3, 2, 5, 4, 6, 8, 7, 16, 12, 32, 10, 64, 24, 128, 9, 256, 48, 512, 20, 1024, 96, 2048, 14, 4096, 192, 8192, 40, 16384, 384, 32768, 11, 65536, 768, 131072, 80, 262144, 1536, 524288, 28, 1048576, 3072, 2097152, 160, 4194304, 6144, 8388608, 18, 16777216 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS a(a(n)) = n; fixed points A014480: a(A014480(n)) = A014480(n). - Reinhard Zumkeller, Apr 27 2006 LINKS FORMULA a(n) = (2*A001511(n) - 1) * 2^(A003602(n) - 1). CROSSREFS Cf. A000265, A007814, A006519, A005408, A000079. Cf. A118413, A118416. Sequence in context: A273876 A273865 A286294 * A194904 A194876 A194837 Adjacent sequences:  A117300 A117301 A117302 * A117304 A117305 A117306 KEYWORD nonn AUTHOR Reinhard Zumkeller, Apr 24 2006 EXTENSIONS Spelling corrected by Jason G. Wurtzel, Aug 23 2010 STATUS approved

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Last modified October 18 00:16 EDT 2018. Contains 316297 sequences. (Running on oeis4.)