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

Terms

a(0) =4a(1) =10a(2) =25a(3) =54a(4) =104a(5) =205a(6) =410a(7) =814a(8) =1609a(9) =3190a(10) =6340a(11) =12609a(12) =25094a(13) =49990a(14) =99665a(15) =198814a(16) =396784a(17) =792205a(18) =1582210a(19) =3160854a(20) =6315929a(21) =12622510a(22) =25229900a(23) =50435329a(24) =100831054a(25) =201598030a(26) =403092385a(27) =806017014a(28) =1611762584a(29) =3223085965