Minimal species of Latin trades of size n.

Terms

a(0) =0a(1) =0a(2) =0a(3) =1a(4) =0a(5) =1a(6) =0a(7) =2a(8) =1a(9) =6a(10) =3a(11) =30a(12) =38a(13) =290a(14) =806a(15) =5460a(16) =23164a(17) =157533a(18) =877106