Number of equivalence classes of n-valued Post functions of 2 variables under action of semi-direct product of symmetric groups S_2 and S(2,n).
A001328
Number of equivalence classes of n-valued Post functions of 2 variables under action of semi-direct product of symmetric groups S_2 and S(2,n).
Terms
- a(0) =6a(1) =438a(2) =3962646
External references
- oeis: A001328