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 A009023 Long legs of Pythagorean triangles. 7
 4, 8, 12, 15, 16, 20, 21, 24, 28, 30, 32, 35, 36, 40, 42, 44, 45, 48, 52, 55, 56, 60, 63, 64, 68, 70, 72, 75, 76, 77, 80, 84, 88, 90, 91, 92, 96, 99, 100, 104, 105, 108, 110, 112, 116, 117, 120, 124, 126, 128, 132, 135, 136, 140, 143, 144, 147, 148, 150, 152, 153, 154, 156 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS A227481(a(n)) > 1. - Reinhard Zumkeller, Oct 11 2013 This is A009012 (sorted A046084) without duplicates. - Andrey Zabolotskiy, Dec 27 2017 Does a(n)/n converge to some limit? - Benoit Cloitre, Oct 18 2009 For n = {52000, 72000, 100000}, n/a(n) = {0.499, 0.50175, 0.50428}. - Alex Ratushnyak, Jan 17 2019 REFERENCES Wacław Sierpiński, Pythagorean triangles, Dover books. [Benoit Cloitre, Oct 17 2009] LINKS Reinhard Zumkeller, Table of n, a(n) for n = 1..1000 PROG (Haskell) a009023 n = a009023_list !! (n-1) a009023_list = filter ((> 1) . a227481) [1..] -- Reinhard Zumkeller, Oct 11 2013 CROSSREFS Cf. A074235 (complement), A009012, A046084, A227481. Sequence in context: A044889 A248159 A190679 * A099309 A327929 A327864 Adjacent sequences:  A009020 A009021 A009022 * A009024 A009025 A009026 KEYWORD nonn AUTHOR STATUS approved

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Last modified April 12 18:58 EDT 2021. Contains 342932 sequences. (Running on oeis4.)