a(n) = denominator((2*n-1)*zeta(2*n)/Pi^(2*n)).

A340243

a(n) = denominator((2*n-1)*zeta(2*n)/Pi^(2*n)).

Terms

    a(0) =2a(1) =6a(2) =30a(3) =189a(4) =1350a(5) =10395a(6) =58046625a(7) =1403325a(8) =21709437750

External references