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 A104588 Product of primes less than or equal to sqrt(n). 2
 1, 1, 1, 2, 2, 2, 2, 2, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 30, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210, 210 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,4 LINKS FORMULA a(n) = A034386(A000196(n)). For n>0, #p(n) appears {(p(n+1))^2 - (p(n))^2} times [from n=(p(n))^2 to n=(p(n+1))^2 - 1, inclusive], i.e. A002110(n) appears A069482(n) times [from n=A001248(n) to n=A001248(n+1)-1, inclusive] MAPLE A104588 := proc(n)         A034386(A000196(n)) ; end proc:  # R. J. Mathar, Jul 28 2013 PROG (PARI) a(n) = {pr = 1; forprime (p=2, sqrtint(n), pr *= p; ); return (pr); }  \\ Michel Marcus, Jul 28 2013 CROSSREFS Sequence in context: A221838 A343122 A338869 * A157279 A214080 A278241 Adjacent sequences:  A104585 A104586 A104587 * A104589 A104590 A104591 KEYWORD nonn AUTHOR Lekraj Beedassy, Mar 17 2005 STATUS approved

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Last modified June 23 16:30 EDT 2021. Contains 345402 sequences. (Running on oeis4.)