a(n) is the number of distinct resistances that can be produced from a circuit with exactly n unit resistors.

A337517

a(n) is the number of distinct resistances that can be produced from a circuit with exactly n unit resistors.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =4a(4) =9a(5) =23a(6) =57a(7) =151a(8) =427a(9) =1263a(10) =3823a(11) =11724a(12) =36048a(13) =110953a(14) =342079a(15) =1064468a(16) =3341067a(17) =10583564a(18) =33727683a(19) =107931482a(20) =346615834

External references