a(n) = A332560(n)/A332559(n).

Terms

a(0) =20a(1) =20a(2) =10a(3) =105a(4) =1512a(5) =27720a(6) =4620a(7) =660a(8) =144144a(9) =16016a(10) =5445440a(11) =495040a(12) =12697776a(13) =976752a(14) =69768a(15) =823727520a(16) =51482970a(17) =3028410a(18) =168245a(19) =8855a(20) =159845400a(21) =5768642880a(22) =262211040a(23) =11400480a(24) =475020a(25) =543814622208a(26) =20915947008a(27) =774664704a(28) =941432800