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 A099795 Least common multiple of 1, 2, 3, ..., prime(n)-1. 7
 1, 2, 12, 60, 2520, 27720, 720720, 12252240, 232792560, 80313433200, 2329089562800, 144403552893600, 5342931457063200, 219060189739591200, 9419588158802421600, 3099044504245996706400, 164249358725037825439200, 9690712164777231700912800 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Robert Israel, Table of n, a(n) for n = 1..342 FORMULA a(n) = (A094998(n)-1) / A099796(n). a(n) = A038610(A000040(n)). - Anthony Browne, Jul 19 2016 MAPLE Primes:= select(isprime, [2, \$3..100]): seq(ilcm(\$2..Primes[i]-1), i=1..nops(Primes)); # Robert Israel, Jul 19 2016 MATHEMATICA LCM@@Range[#]&/@(Prime[Range[20]]-1) (* Harvey P. Dale, Jan 30 2015 *) PROG (MAGMA) [Lcm([2..p-1]): p in PrimesUpTo(70)]; // Bruno Berselli, Feb 06 2015 CROSSREFS Cf. A094998, A099794, A099796, A038610, A000040. Sequence in context: A145630 A082688 A099996 * A127044 A245091 A037562 Adjacent sequences:  A099792 A099793 A099794 * A099796 A099797 A099798 KEYWORD nonn AUTHOR Ray Chandler, Oct 29 2004 EXTENSIONS a(18) from Bruno Berselli, Feb 06 2015 STATUS approved

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Last modified August 13 06:22 EDT 2020. Contains 336442 sequences. (Running on oeis4.)