Number of minimal total dominating sets in the (2n-1)-triangular snake graph.

Terms

a(0) =0a(1) =3a(2) =5a(3) =7a(4) =14a(5) =22a(6) =42a(7) =70a(8) =127a(9) =218a(10) =388a(11) =675a(12) =1191a(13) =2083a(14) =3663a(15) =6420a(16) =11275a(17) =19777a(18) =34716a(19) =60912a(20) =106904a(21) =187592a(22) =329213a(23) =577716a(24) =1013834a(25) =1779141a(26) =3122189a(27) =5479045a(28) =9615069a(29) =16873254