The odd part of Minkowski(n)/n!

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =3a(6) =1a(7) =9a(8) =9a(9) =15a(10) =3a(11) =9a(12) =3a(13) =945a(14) =135a(15) =27a(16) =27a(17) =405a(18) =45a(19) =8505a(20) =1701a(21) =66825a(22) =6075a(23) =18225a(24) =6075a(25) =995085a(26) =76545a(27) =8505a(28) =1215a(29) =18225