Number of resistance values that can be constructed using up to n equal resistances by arranging them in an arbitrary series-parallel arrangement.

A153588

Number of resistance values that can be constructed using up to n equal resistances by arranging them in an arbitrary series-parallel arrangement.

Terms

    a(0) =1a(1) =3a(2) =7a(3) =15a(4) =35a(5) =77a(6) =179a(7) =429a(8) =1039a(9) =2525a(10) =6235a(11) =15463a(12) =38513a(13) =96231a(14) =241519a(15) =607339a(16) =1529533a(17) =3857447a(18) =9743247a(19) =24634043a(20) =62335495a(21) =157885967a(22) =400211085a(23) =1015080877a(24) =2576308943a(25) =6542380707a(26) =16622493939a(27) =42252603207a(28) =107447022475a(29) =273337662943

External references