Number of hyperforests with n unlabeled vertices: analog of A134955 when edges of size 1 are allowed (with no two equal edges).

A134957

Number of hyperforests with n unlabeled vertices: analog of A134955 when edges of size 1 are allowed (with no two equal edges).

Terms

    a(0) =1a(1) =2a(2) =6a(3) =20a(4) =75a(5) =310a(6) =1422a(7) =7094a(8) =37877a(9) =213610a(10) =1256422a(11) =7641700a(12) =47735075a(13) =304766742a(14) =1981348605a(15) =13079643892a(16) =87480944764a(17) =591771554768

External references