A399676 
Number of nonisomorphic doppelsemigroups of order n
A399678 Number of nonisomorphic commutative doppelsemigroups of order n
A399679 Number of nonisomorphic strong doppelsemigroups of order n
A401354 Number of nonisomorphic abelian doppelsemigroups of order n
A397782 Number of nonisomorphic rectangular doppelsemigroups of order n
A399601 Number of nonisomorphic rectangular ideal extensions of order n of left zero (trivial) doppelsemigroups by null quotients
A400568 Number of nonisomorphic dimonoids of order n
A400569 Number of nonisomorphic commutative dimonoids of order n
A401298 Number of nonisomorphic abelian dimonoids of order n
A400570 Number of nonisomorphic rectangular dimonoids of order n
A400914 Number of nonisomorphic g-dimonoids of order n
A400915 Number of nonisomorphic commutative g-dimonoids of order n
A398976 Number of nonisomorphic rectangular g-dimonoids of order n