Related to number of labeled partially ordered sets.
A076301
Related to number of labeled partially ordered sets.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =15a(4) =96a(5) =720a(6) =6120a(7) =57960a(8) =604800a(9) =6894720a(10) =85276800a(11) =1137628800a(12) =16286054400a(13) =249080832000
External references
- oeis: A076301