Number of nonisomorphic connected partial lattices.

Terms

a(0) =1a(1) =1a(2) =1a(3) =3a(4) =9a(5) =35a(6) =153a(7) =791a(8) =4597a(9) =29988a(10) =215804a(11) =1697291a(12) =14457059a(13) =132392971a(14) =1295346365a(15) =13468653637a(16) =148142236784