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 A113001 Smallest k, not occurring earlier, such that (2*k + n-th odd prime) is prime. 5
 1, 3, 2, 4, 5, 6, 9, 7, 12, 8, 11, 10, 14, 13, 15, 19, 18, 17, 16, 20, 24, 22, 21, 26, 25, 23, 28, 27, 30, 32, 31, 37, 29, 39, 36, 33, 35, 42, 34, 45, 38, 40, 44, 43, 41, 48, 47, 52, 51, 49, 46, 53, 54, 55, 58, 57, 56, 60, 64, 50, 63, 62, 61, 59, 66, 65, 71, 70, 69, 67, 72, 68 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Permutation of the natural numbers with fixed points A113005: a(A113005(n))=A113005(n); inverse: A113004; A113006(n) = a(a(n)); A113002(n) = 2*a(n) + A065091(n). LINKS CROSSREFS Sequence in context: A081943 A216249 A113004 * A036812 A039906 A056011 Adjacent sequences:  A112998 A112999 A113000 * A113002 A113003 A113004 KEYWORD nonn AUTHOR Reinhard Zumkeller, Oct 10 2005 STATUS approved

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