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 A064787 Inverse permutation to A053212. 2
 1, 2, 3, 4, 6, 5, 11, 7, 8, 9, 23, 10, 31, 15, 13, 12, 58, 14, 74, 16, 18, 29, 122, 17, 25, 40, 21, 22, 224, 19, 267, 20, 38, 69, 33, 24, 453, 89, 49, 26, 636, 28, 737, 43, 30, 141, 995, 27, 53, 35, 84, 57, 1523, 34, 59, 36, 108, 257, 2244, 32, 2528, 310, 41, 37, 77, 52 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS EXAMPLE a(23) = 122 because d(n) (A000005(n)) takes 121 different values before it first reaches 23 (at n = 2^22). PROG (Haskell) import Data.List (elemIndex); import Data.Maybe (fromJust) a064787 = (+ 1) . fromJust . (`elemIndex` a053212_list) -- Reinhard Zumkeller, Apr 18 2015 CROSSREFS Cf. A000005. Sequence in context: A263266 A263268 A257472 * A075160 A119755 A206710 Adjacent sequences:  A064784 A064785 A064786 * A064788 A064789 A064790 KEYWORD easy,nonn AUTHOR N. J. A. Sloane, Oct 20 2001 EXTENSIONS More terms from Naohiro Nomoto, Oct 31 2001 More terms from David Wasserman, Aug 14 2002 STATUS approved

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Last modified April 5 10:33 EDT 2020. Contains 333239 sequences. (Running on oeis4.)