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 A300868 Lexicographically earliest sequence of distinct positive terms such that, for any n > 0, n * a(n) is a Fibbinary number (A003714). 2
 1, 2, 3, 4, 8, 6, 12, 5, 9, 13, 15, 7, 10, 19, 11, 16, 17, 18, 14, 26, 32, 24, 23, 22, 41, 20, 38, 39, 36, 43, 44, 21, 33, 34, 59, 29, 64, 27, 28, 52, 25, 49, 30, 31, 53, 46, 47, 48, 42, 82, 51, 40, 45, 76, 96, 78, 72, 73, 35, 71, 84, 75, 86, 37, 65, 66, 70 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS This sequence is a self inverse permutation of the natural numbers. LINKS Rémy Sigrist, Table of n, a(n) for n = 1..10000 Rémy Sigrist, Colored logarithmic scatterplot of the first 2^15 terms (where the color is function of A070939(n * a(n))) Rémy Sigrist, C++ program for A300868 EXAMPLE The first terms, alongside the binary representation of n * a(n), are:   n  a(n)    binary(n * a(n))   -- ----    ----------------    1    1             1    2    2           100    3    3          1001    4    4         10000    5    8        101000    6    6        100100    7   12       1010100    8    5        101000    9    9       1010001   10   13      10000010   11   15      10100101   12    7       1010100   13   10      10000010   14   19     100001010   15   11      10100101   16   16     100000000   17   17     100100001   18   18     101000100   19   14     100001010   20   26    1000001000 PROG (C++) See Links section. CROSSREFS Cf. A003714, A070939. Sequence in context: A229927 A222256 A223540 * A176077 A332778 A263694 Adjacent sequences:  A300865 A300866 A300867 * A300869 A300870 A300871 KEYWORD nonn,look,base AUTHOR Rémy Sigrist, Mar 14 2018 STATUS approved

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Last modified August 5 15:11 EDT 2021. Contains 346471 sequences. (Running on oeis4.)