Number of total dominating sets in the n-prism graph.

Terms

a(0) =3a(1) =9a(2) =39a(3) =121a(4) =443a(5) =1521a(6) =5071a(7) =17161a(8) =58035a(9) =196249a(10) =664183a(11) =2247001a(12) =7601259a(13) =25715041a(14) =86992799a(15) =294294025a(16) =995591267a(17) =3368061225a(18) =11394069191a(19) =38545861561a(20) =130399710235a(21) =441139057489