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A076926
Smallest multiple of n with n distinct prime divisors.
2
2, 6, 30, 420, 2310, 30030, 510510, 38798760, 669278610, 6469693230, 200560490130, 14841476269620, 304250263527210, 13082761331670030, 614889782588491410, 260713267817520357840, 1922760350154212639070
OFFSET
1,1
COMMENTS
Prime divisors counted without multiplicity. - Harvey P. Dale, Dec 06 2018
LINKS
FORMULA
a(n) = A002110(n)*A003557(n). - Anthony Browne, Jun 13 2016
MAPLE
seq(lcm(product(ithprime(i), i=1..j), j), j=1..40);
MATHEMATICA
With[{nn=20}, LCM@@#&/@Thread[{Range[nn], FoldList[Times, Prime[ Range[ nn]]]}]] (* Harvey P. Dale, Dec 06 2018 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Amarnath Murthy, Oct 17 2002
EXTENSIONS
More terms from Sascha Kurz, Jan 03 2003
Definition clarified by Harvey P. Dale, Dec 06 2018
STATUS
approved