Number of linearly ordered Abelian monoids of size n (semigroups with greatest element of the corresponding chain as neutral element); triangular norms on an n-chain.
A030453
Number of linearly ordered Abelian monoids of size n (semigroups with greatest element of the corresponding chain as neutral element); triangular norms on an n-chain.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =6a(4) =22a(5) =94a(6) =451a(7) =2386a(8) =13775a(9) =86417a(10) =590489a(11) =4446029a(12) =37869449a(13) =382549464
External references
- oeis: A030453