Number of maximum matchings in the n-Moebius ladder M_n.

Terms

a(0) =2a(1) =3a(2) =3a(3) =6a(4) =7a(5) =13a(6) =18a(7) =31a(8) =47a(9) =78a(10) =123a(11) =201a(12) =322a(13) =523a(14) =843a(15) =1366a(16) =2207a(17) =3573a(18) =5778a(19) =9351a(20) =15127a(21) =24478a(22) =39603a(23) =64081a(24) =103682a(25) =167763a(26) =271443a(27) =439206a(28) =710647a(29) =1149853