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 A009299 If a, b in sequence, so is a*b+2. 4
 2, 6, 14, 30, 38, 62, 78, 86, 126, 158, 174, 182, 198, 230, 254, 318, 350, 366, 374, 398, 422, 462, 470, 510, 518, 534, 638, 702, 734, 750, 758, 798, 846, 870, 902, 926, 942, 950, 1022, 1038, 1046, 1070, 1094, 1142, 1190, 1206, 1278, 1382, 1406, 1446, 1470, 1502 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Reinhard Zumkeller, Table of n, a(n) for n = 1..1000 PROG (Haskell) import Data.Set (singleton, deleteFindMin, insert) a009299 n = a009299_list !! (n-1) a009299_list = f [2] (singleton 2) where    f xs s = m : f xs' (foldl (flip insert) s' (map ((+ 2) . (* m)) xs'))      where xs' = m : xs            (m, s') = deleteFindMin s -- Reinhard Zumkeller, Aug 15 2011 CROSSREFS Cf. A009293, A192476. Sequence in context: A123991 A112511 A063452 * A330766 A072611 A284023 Adjacent sequences:  A009296 A009297 A009298 * A009300 A009301 A009302 KEYWORD nonn AUTHOR STATUS approved

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Last modified June 1 18:43 EDT 2020. Contains 334762 sequences. (Running on oeis4.)