Number of nonisomorphic magmas with n elements and empty center.
A391156
Number of nonisomorphic magmas with n elements and empty center.
Terms
- a(0) =1a(1) =0a(2) =6a(3) =2463a(4) =168710720
External references
- oeis: A391156
A391156
Number of nonisomorphic magmas with n elements and empty center.