Number of essentially series oriented series-parallel networks with n labeled elements and without multiple unit elements in parallel.
A339299
Number of essentially series oriented series-parallel networks with n labeled elements and without multiple unit elements in parallel.
Terms
- a(0) =0a(1) =2a(2) =6a(3) =72a(4) =840a(5) =14040a(6) =276360a(7) =6494880a(8) =175452480a(9) =5375311200a(10) =183962227680
External references
- oeis: A339299