Number of unoriented series-parallel networks with n integer valued elements spanning an initial interval of positive integers.
A339283
Number of unoriented series-parallel networks with n integer valued elements spanning an initial interval of positive integers.
Terms
- a(0) =1a(1) =4a(2) =28a(3) =361a(4) =7061a(5) =184327a(6) =5941855a(7) =226973560a(8) =10011116097a(9) =500553647373
External references
- oeis: A339283