83925

Appears in sequences

• Number of nonisomorphic commutative groupoids with 1 idempotent and a nontrivial symmetry.at n=4A030265
• Triangle: T(n,k), k<=n: commutative groupoids with a nontrivial symmetry with n elements and k idempotents.at n=16A038023
• Number of length n+5 0..4 arrays with some disjoint triples in each consecutive six terms having the same sum.at n=3A248064
• T(n,k)=Number of length n+5 0..k arrays with some disjoint triples in each consecutive six terms having the same sum.at n=24A248068
• Number of length 4+5 0..n arrays with some disjoint triples in each consecutive six terms having the same sum.at n=3A248072