Number of nonisomorphic commutative systems with n elements with one binary operation satisfying the equation B(AB)=A (totally-symmetric quasigroups).
A076019
Number of nonisomorphic commutative systems with n elements with one binary operation satisfying the equation B(AB)=A (totally-symmetric quasigroups).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =2a(4) =1a(5) =3a(6) =3a(7) =13a(8) =12a(9) =139a(10) =65a(11) =25894a(12) =24316a(13) =92798256a(14) =122859802
External references
- oeis: A076019