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 A285916 Self-inverse permutation: in base 3, reverse the lengths of runs of consecutive equal digits. 1
 0, 1, 2, 3, 4, 5, 6, 7, 8, 12, 10, 11, 9, 13, 17, 15, 16, 14, 24, 19, 20, 21, 25, 23, 18, 22, 26, 39, 28, 29, 30, 37, 32, 33, 34, 38, 36, 31, 35, 27, 40, 53, 45, 49, 44, 42, 46, 47, 48, 43, 50, 51, 52, 41, 78, 55, 56, 57, 73, 59, 60, 61, 74, 75, 64, 65, 66, 79 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS This sequence can be seen as an analog of A056539 for the base 3. For any n>=0, n and a(n) have the same number of digits in base 3. LINKS Rémy Sigrist, Table of n, a(n) for n = 0..6560 Rémy Sigrist, PARI program for A285916 EXAMPLE The first terms for which n<>a(n) are: Decimal:    Base 3: n   a(n)    n       a(n) -   ----    ---     ---- 9   12      100     110 12  9       110     100 14  17      112     122 17  14      122     112 18  24      200     220 22  25      211     221 24  18      220     200 25  22      221     211 27  39      1000    1110 31  37      1011    1101 35  38      1022    1102 37  31      1101    1011 38  35      1102    1022 39  27      1110    1000 41  53      1112    1222 42  45      1120    1200 CROSSREFS Cf. A056539. Sequence in context: A211699 A118600 A080543 * A119797 A032972 A210585 Adjacent sequences:  A285913 A285914 A285915 * A285917 A285918 A285919 KEYWORD nonn,base,look AUTHOR Rémy Sigrist, Apr 28 2017 STATUS approved

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Last modified August 5 22:41 EDT 2021. Contains 346488 sequences. (Running on oeis4.)