Number of inverse monoids of order n.

Terms

a(0) =1a(1) =2a(2) =4a(3) =11a(4) =27a(5) =89a(6) =310a(7) =1311a(8) =6253a(9) =34325a(10) =212247a(11) =1466180a(12) =11167987a(13) =92889294a(14) =836021796