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 A130336 Record values in A130335. 2
 1, 2, 7, 10, 13, 22, 31, 37, 58, 79, 82, 94, 109, 118, 157, 178, 193, 214 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Table of n, a(n) for n=1..18. FORMULA a(n) = A130335(A130337(n)). A130335(k) < a(n) for k < A130337(n). MATHEMATICA f[n_] := Block[{k = 1}, While[ GCD[n(n + 1)/2, (n + k)(n + k + 1)/2] != 1, k++ ]; k]; t = Table[0, {1000}]; Do[a = f@n; If[a < 1001 && t[[a]] == 0, t[[a]] = n; Print[{a, n}], If[a > 1000, Print[{"Over 1000", n}]]], {n, 2^31 - 1}] (* Robert G. Wilson v, Jun 03 2007 *) CROSSREFS CF. A130335, A130337. Sequence in context: A203621 A297832 A003158 * A303741 A085303 A304799 Adjacent sequences: A130333 A130334 A130335 * A130337 A130338 A130339 KEYWORD nonn,more AUTHOR Reinhard Zumkeller, May 28 2007 EXTENSIONS a(13)-a(16) from Robert G. Wilson v, Jun 03 2007 Added a(17) and corrected a(12) by Chai Wah Wu, Sep 16 2021 a(18) from Chai Wah Wu, Sep 23 2021 STATUS approved

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Last modified May 23 16:36 EDT 2024. Contains 372765 sequences. (Running on oeis4.)