a(n) = denominator( n^n/(2*n)! ).

A244084

a(n) = denominator( n^n/(2*n)! ).

Terms

    a(0) =1a(1) =2a(2) =6a(3) =80a(4) =315a(5) =145152a(6) =30800a(7) =1779148800a(8) =638512875a(9) =975822848000

External references