a(n) = Product_{k=1..n} binomial(n, floor(n/k)).

A345466

a(n) = Product_{k=1..n} binomial(n, floor(n/k)).

Terms

    a(0) =1a(1) =1a(2) =2a(3) =9a(4) =96a(5) =1250a(6) =64800a(7) =1764735a(8) =224788480a(9) =22499086176

External references