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A065735
Largest square <= product of first n primes.
1
1, 4, 25, 196, 2304, 29929, 509796, 9696996, 223084096, 6469628356, 200559769921, 7420737154609, 304250260158441, 13082761295250201, 614889781233144561, 32589158470911505225, 1922760350143213168900
OFFSET
1,2
LINKS
FORMULA
a(n) = A048760(A002110(n)).
MATHEMATICA
Floor[Sqrt[#]]^2&/@FoldList[Times, Prime[Range[20]]] (* Harvey P. Dale, Jan 13 2024 *)
PROG
(PARI) { m=1; for (n=1, 100, m*=prime(n); a=sqrtint(m)^2; write("b065735.txt", n, " ", a) ) } \\ Harry J. Smith, Oct 28 2009
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Labos Elemer, Nov 15 2001
STATUS
approved