a(n) is the permanent of the n X n matrix whose generic element is given by F(2*i-1)*L(2*i) if i = j and F(2*j)*L(2*j-1) if i != j with 1 <= i,j <= n, where F(n) = A000045(n) and L(n) = A000032(n).
A392840
a(n) is the permanent of the n X n matrix whose generic element is given by F(2*i-1)*L(2*i) if i = j and F(2*j)*L(2*j-1) if i != j with 1 <= i,j <= n, where F(n) = A000045(n) and L(n) = A000032(n).
Terms
- a(0) =1a(1) =3a(2) =54a(3) =11372a(4) =24402232a(5) =470427113744
External references
- oeis: A392840