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 A116941 Permutation of the natural numbers in conjunction with A116939 and A003056. 5
 0, 1, 3, 2, 4, 6, 5, 7, 9, 11, 8, 10, 12, 14, 16, 13, 15, 17, 19, 21, 23, 18, 20, 22, 24, 26, 28, 30, 25, 27, 29, 31, 33, 35, 37, 39, 32, 34, 36, 38, 40, 42, 44, 46, 48, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 61, 63, 65, 67, 69, 71, 73 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS Inverse: A116942; A003056(n) = A116939(a(n)). LINKS Reinhard Zumkeller, Table of n, a(n) for n = 0..10000 FORMULA a(n) = A074147(n+1) - 1. - Robert G. Wilson v, Mar 09 2017 MATHEMATICA Table[ Ceiling[(n -1)^2/2] + 2k -2, {n, 12}, {k, n}] // Flatten (* Robert G. Wilson v, Mar 09 2017 after Ivan Neretin in A074147 *) PROG (Haskell) a116941 n = a116941_list !! n a116941_list = f 0 1 (zip a116939_list [0..]) [] where    f u v xis'@((x, i):xis) ws      | x == u    = i : f u v xis ws      | x == v    = f u v xis (i : ws)      | otherwise = reverse ws ++ f v x xis' [] -- Reinhard Zumkeller, Jun 28 2013 CROSSREFS Sequence in context: A049831 A186005 A080782 * A166695 A254107 A116942 Adjacent sequences:  A116938 A116939 A116940 * A116942 A116943 A116944 KEYWORD nonn AUTHOR Reinhard Zumkeller, Feb 27 2006 STATUS approved

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Last modified October 22 17:55 EDT 2019. Contains 328319 sequences. (Running on oeis4.)