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 A059983 First occurrence of n in A007599. 1
 1, 0, 6, 7, 8, 9, 12, 13, 14, 15, 18, 19, 22, 23, 24, 25, 28, 29, 32, 33, 36, 37, 40, 41, 42, 43, 46, 47, 50, 51, 54, 55, 58, 59, 62, 63, 66, 67, 70, 71, 74, 75, 76, 77, 80, 81, 84, 85, 88, 89, 92, 93, 96, 97, 100, 101, 104, 105, 108, 109, 112, 113, 116, 117, 120, 121, 124 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Reinhard Zumkeller, Table of n, a(n) for n = 0..10000 EXAMPLE a(5) does not appear in A007599 until the 9th entry, keeping in mind the offset. MATHEMATICA a[n_Integer] := a[n] = (a[n - 1] + Nest[a, n - 2, Floor[n/2] ] ); a[0] = 1; a[1] = 0; b[n_Integer] := (k = 0; While[ a[k] != n, k++ ]; k); Table[ b[n], {n, 0, 75} ] PROG (Haskell) import Data.List (elemIndex) import Data.Maybe (mapMaybe) a059983 n = a059983_list !! n a059983_list = mapMaybe (`elemIndex` a007599_list) [0..] -- Reinhard Zumkeller, Jan 05 2012 CROSSREFS Cf. A007599. Sequence in context: A005050 A309265 A120191 * A177106 A269101 A037366 Adjacent sequences:  A059980 A059981 A059982 * A059984 A059985 A059986 KEYWORD nonn AUTHOR Robert G. Wilson v, Mar 07 2001 STATUS approved

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Last modified July 21 21:14 EDT 2019. Contains 325199 sequences. (Running on oeis4.)