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 A362989 a(n) = lcm({i + 1, i = 0..n}) / Product_{d | n, d + 1 prime} d. 1
 1, 1, 1, 6, 2, 30, 10, 420, 84, 1260, 420, 13860, 132, 180180, 60060, 360360, 24024, 6126120, 291720, 116396280, 705432, 116396280, 38798760, 2677114440, 9806280, 13385572200, 13385572200, 40156716600, 2677114440, 1164544781400, 5041319400, 72201776446800 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,4 LINKS Table of n, a(n) for n=0..31. MAPLE LCM := n -> ilcm(seq(i + 1, i = 0..n)): Clausen := n -> if n = 0 then 1 else mul(i, i = select(isprime, map(i -> i+1, NumberTheory:-Divisors(n)))) fi: A362989 := n -> LCM(n) / Clausen(n): seq(A362989(n), n = 0..31); CROSSREFS Cf. A003418 (lcm), A160014 (Clausen). Sequence in context: A176965 A084249 A176591 * A191703 A096039 A201229 Adjacent sequences: A362986 A362987 A362988 * A362990 A362991 A362992 KEYWORD nonn AUTHOR Peter Luschny, May 14 2023 STATUS approved

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Last modified September 17 04:18 EDT 2024. Contains 375984 sequences. (Running on oeis4.)