a(n) is the number of distinct resistances that can be obtained by a network of exactly n equal resistors, but not by any network with fewer than n equal resistors.

A338197

a(n) is the number of distinct resistances that can be obtained by a network of exactly n equal resistors, but not by any network with fewer than n equal resistors.

Terms

    a(0) =1a(1) =2a(2) =4a(3) =8a(4) =20a(5) =44a(6) =114a(7) =312a(8) =894a(9) =2639a(10) =8005a(11) =24362a(12) =74918a(13) =231123a(14) =722388a(15) =2276599a(16) =7242497a(17) =23144119a(18) =74203799a(19) =238684352

External references