Number of oriented series-parallel networks with n labeled elements and without multiple unit elements in parallel.
A339301
Number of oriented series-parallel networks with n labeled elements and without multiple unit elements in parallel.
Terms
- a(0) =1a(1) =2a(2) =12a(3) =108a(4) =1380a(5) =22440a(6) =446040a(7) =10461360a(8) =282970800a(9) =8670594240a(10) =296850597120
External references
- oeis: A339301