Order of universal Chevalley group B_n (2) or symplectic group Sp(2n,2).

A003923

Order of universal Chevalley group B_n (2) or symplectic group Sp(2n,2).

Terms

    a(0) =1a(1) =6a(2) =720a(3) =1451520a(4) =47377612800

External references