Number of iposets (posets with interfaces) with n points.

A331158

Number of iposets (posets with interfaces) with n points.

Terms

    a(0) =1a(1) =4a(2) =17a(3) =86a(4) =532a(5) =4068a(6) =38933a(7) =474822a(8) =7558620

External references