Number of oriented series-parallel networks with n elements of 2 colors.

A339226

Number of oriented series-parallel networks with n elements of 2 colors.

Terms

    a(0) =2a(1) =7a(2) =32a(3) =176a(4) =1066a(5) =6935a(6) =47216a(7) =332700a(8) =2404818a(9) =17734668a(10) =132901644a(11) =1009161505a(12) =7747608480a(13) =60037905076a(14) =468987635982

External references