a(n) is the permanent of the n X n Vandermonde matrix V(1, 2, ..., 2^(n-1)).

A392327

a(n) is the permanent of the n X n Vandermonde matrix V(1, 2, ..., 2^(n-1)).

Terms

    a(0) =1a(1) =1a(2) =3a(3) =74a(4) =57520a(5) =5715121152

External references