Permanent of the symmetric n X n matrix M defined by M(i,j) = gcd(i,j) for 1 <= i,j <= n.

A085244

Permanent of the symmetric n X n matrix M defined by M(i,j) = gcd(i,j) for 1 <= i,j <= n.

Terms

    a(0) =1a(1) =3a(2) =14a(3) =112a(4) =872a(5) =14372a(6) =154480a(7) =3098480a(8) =59710816a(9) =1688186176a(10) =27925409152

External references